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PAGE TEN OF REPORTS: R.A. 18h 16m 15s To 18h 33m 29s
These observing reports correspond to the objects high-lighted in SEC Data Base.
Unless otherwise noted, these reports are possible through the courtesy of Steve
Gottlieb, Kent Wallace and Maurice Clark (Australia).
M1_44 RA 18,16.3 DEC
-27,05 MAG 16.2 CSM ? SIZE 4" on 09/12/96. Tried to find this PN but had no
luck. Kent Wallace, Navaho Flats, California,
20" f 5.0 reflector.
Haro1_63 = H1_63 = PK 2-6.2 = E457-PN3
18 16.3 -30 08
17.5: very unusual location as attached at the SE side of mag 8.9 SAO
209938. Located in a rich star field with a mag 12 star 2.3' WNW and a
faint evenly matched double star 1.9' SSE. Visible unfiltered but the
glare from the star makes viewing difficult. OIII filter suppresses star
and the planetary is easy to see. Appears nonstellar, perhaps 5" diameter,
and estimate mag 14.0.
H1_63 RA 18,16.3 DEC -30,08 MAG 12.9 CSM 14.7 SIZE 7" on 08/12/98. At 254X, can see with averted vision alone as a very faint star very close to a relatively bright star, requiring the UHC filter to identify it as a PN. Good response to the O-III & UHC filters. No response to the H-B filter. Identified the field in the SEC finderchart. The PN is just SW of the relatively bright star. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Ngc6578 = PK 10-1.1 = E590-PN12
(Steve Gottlieb)
18 16.3 -20 27
13: just non-stellar at 220x, estimate V = 13.0, 5" diameter. Suspected
nebulous at 144x, confirmed by UHC blinking. Located 7.2' NW of mag 7.1
SAO 186575 (17 Sagittarii?). Forms a close double with a mag 11 star 21"
WSW and a pair of mag 11 stars are 1' SE. Plotted incorrectly on the SC
2000.0.
N6578 = PK 10-1.1 = PN G010.8-01.8 = E590-PN12 (Steve Gottlieb)
18 16 16.4 -20 27 02
V = 12.9; Size 13"x10"
17.5" (8/17/01): Situated within clump of stars at 100x and appeared
stellar
at low power. At 500x, a small unevenly lit 4" disc was easily
visible close
ENE [21"] of a mag 11 star. An extremely faint star is just off the SE edge
and an evenly matched 20" pair of mag 11 stars lie 1' SE. Located 7'
NW of a
mag 7 star.
13": just non-stellar at 220x, estimate V = 13.0, 5" diameter.
Suspected
nebulous at 144x, confirmed by UHC blinking. Located 7.2' NW of mag 7.1
SAO
186575 (17 Sagittarii?). Forms a close double with a mag 11 star 21"
WSW and
a pair of mag 11 stars are 1' SE. This PN is plotted incorrectly on the
Sky
Atlas 2000.0.
KFL16 RA 18,16.9 DEC
-26,23 MAG 16.7 CSM ? SIZE 12" on 09/23/97. VIEW
IMAGE
At 254X, very faint small fuzzy
disk, unsteady, requiring the UHC filter and averted vision. Good response to
the O-III & UHC filters. No response to the H-B filter. Identified the field
in the SEC finderchart. There is a group of very faint stars that are near the
PN and appear as a fuzzy patch. one could confuse the fuzy patch for the PN.
This is a first known visual sighting. Kent
Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M2_34 = PK 7-3.1
VIEW IMAGE
18 17.3 -23 59
17.5: visible without a filter as a mag 15 "star" situated 1' NW of a mag
13.5 pair at 16" oriented E-W. Weak contrast gain with an OIII filter and
appears quasi-stellar with a very small disc 3"-5". Located 2.1' ESE of
mag 9.5 SAO 186587.
M2_34 RA 18,17.3 DEC -23,59 MAG 16.2 CSM ? SIZE 13"x6" on 09/23/97. At 169X, faint, stellar, requiring the O-III filter and averted vision. Good response to the O-III & UHC filters. No response to the H-B filter. At 254X, can see the PN as a very faint, just non-stellar blob with averted vision alone. Needed the UHC filter to identify it as a PN. Identified the field in the SEC finderchart even though the finderchart is crummy. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Cn3_1 = PK 38+12.1 = Cannon3-1
18 17.6 +10 09
13: at 144x without filter, appears as a mag 12-13 stellar object. Very
weak response with filter as dims with OIII filter but appears to have
about a 1/2 magnitude contrast gain with Daystar 300 compared to stars.
Easily takes 360x but still stellar. Considered a doubtful pn as very low
OIII/Hß ratio.
M2_35 RA 18,17.6 DEC -31,57 MAG 15.4 CSM ? SIZE 5" on 08/12/98. At 134X, 169X & 254X, stellar, requiring the O-III filter and averted vision. Good response to the O-III filter. Fair response to the UHC filter. No response to the H-B filter. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Pe1_12 RA 18,17.7 DEC
-28,17 MAG 16.0 CSM 17.2 SIZE 12" on 09/04/96. VIEW
IMAGE
Faint small disk,
requiring the O-III filter and averted vision. Good response to the O-III
filter. Fair response to the UHC filter. No response to the H-B filter.
Identified the field in the SEC finderchart. This is a first known visual
sighting.
Kent Wallace, Navaho Flats, California,
20" f 5.0 reflector.
M2_36 = PK 3-6.1 = E457-PN5
18 17.7 -29 08
17.5: visible unfiltered as a mag 13 "star" 3' ENE of a mag 9 star and 4'
SSE of a mag 9.5 star. A good comparison mag 12 star is 1.7' SSE.
Excellent contrast gain with OIII filter and the planetary appears a couple
of magnitudes brighter than this star. Possibly quasi-stellar with the
filter about 3" diameter.
MA3 = PK 023+4.1 = PN G 023.0 +04.3
18,17.8 -06,48
MAG 18.0 SIZE 5" on 07/30/00. Tried to find this PN but had no luck.
Couldn't identify the field in the SEC finderchart. This PN is in a dusty
area.
Kent Wallace, Navaho Flats, California, 20" f/5 reflector.
Pe2_13 = PK 6-4.1 = E522-PN14
18 18.2 -25 38
17.5: not seen unfiltered at 220x. Using an OIII filter, a very faint
quasi-stellar object (estimated V = 15.0-15.5) is visible 6.6' WSW of mag
6.5 SAO 186629 and 4.5' S of a 10th magnitude star. Extending NW from the
planetary is a string of faint stars.
Pe2_13 RA 18,18.2 DEC -25,38 MAG 15.0 CSM 17.3 SIZE 7"x5" on 09/23/97. At 134X, 169X and 254X, stellar, requiring the O-III filter and averted vision. Good response to the O-III filter. Fair response to the UHC filter. No response to the H-B filter. The SEC finderchart is of no value because it is overexposed. The image is best at 169X. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
H1_64 = Haro1_64 = PK 008-3.1 = PN G 008.4-03.6
18,18.4 -23,25
MAG 18.9 SIZE 8"x7" on 07/30/00. Tried to find this PN but had
no luck.
Did identify the field in the SEC finderchart.
Kent Wallace, Navaho Flats, California, 20" f/5 reflector.
IC4699 = PK 348-13.1 = E280-PN8
18 18.5 -45 59
13: at 79x and 166x appears very faint and stellar. Verified with both
OIII and UHC filters. Estimate V = 13.0 but may be brighter due to the
very low elevation of object from Northern California. Uncertain if very
small disc seen at 166x.
M2_37 = PK 4-5.5
18 18.6 -28 08
13: not found
M2_37 = PK 004-5.5 = PN G 004.2-05.9
18,18.6 -28,08
MAG 17.9 SIZE 7" on 07/28/00. Tried to find this PN but had no luck.
Did
identify the field in the SEC finderchart.
Kent Wallace, Navaho Flats, California, 20" f/5 reflector.
H2_46 = Haro2-46 RA 18,18.6 DEC -31,55 MAG 15.7 CSM ? SIZE 4" on 08/16/98. At 134X and 169X, stellar, requiring the O-III filter and averted vision. Good response to the O-III & UHC filters. No response to the H-B filter. At 254X could see the PN with averted vision alone as a faint star but required the UHC filter to identify it as the PN. The SEC finderchart was of no value. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M2_38 = PK 5-5.1
18 19.4 -26 35
17.5: at 220x and OIII filter seens as a very faint, very small disk, about
10" diameter, estimate V = 14.5-15.0. No superimposed stars although a mag
14 star is 30" SW.
H1_65 = Haro1_65 RA 18,20.1 DEC -24,15 MAG ? CSM 14.7 SIZE 8" on 08/14/98. At 254X, faint stellar, forming a pair with another faint star, visible with averted vision alone but requiring the UHC filter to identify it as a PN. Fair response to the UHC & H-B filters. No response to the O-III filter. Identified the field in the SEC finderchart. It is just where it is supposed to be. This is a first known visual sighting. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M2_40 = PK 24+3.1
18 21.4 -06 02
17.5: at 220x with averted vision, the planetary is visible as a very
faint, fuzzy disc ~5" diameter. Surprisingly, the object dimmed to
invisibility with OIII filtration at 220x and 140x. Better view at 280x,
where the disc was easy to view with averted vision 1.0' SSE of a mag 14.5
star. A slightly fainter star not plotted on GSC is ~30" WNW of this star.
Confirmed using GSC and SEC finder charts. Estimate V = 15.5-16.
M2_40 RA 18,21.4 DEC -06,02 MAG 16.2 CSM ? SIZE 6"x5" on 09/20/95. It was stellar, faint, requiring the UHC filter and averted vision. It was best at 169X. Good response to the O-III & UHC filters. No response to the H-B filter. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
MaC1_12 (new PN, Skiff list), RA 18,21.4 DEC -08,31.7 MAG ? CSM ? SIZE 3" on 10/06/96. At 169X, stellar, faint, requiring the UHC filter and averted vision. The PN forms a pair with a faint star. Without the filter the PN is just visible south of the faint star. With the UHC filter the PN is brighter than the faint star. Good response to the UHC & O-III filters. No response to the H-B filter. The pair is easier to see at 254X. This was tough to find without a finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
K1_16 = PK 94+27.1
VIEW IMAGE
18 21.9 +64 22
17.5: field identified at 220x with GSC finder chart and mag 14.5-15
central star easily visible but no nebulosity was visible. At 100x and an
OIII filter, the planetary was barely glimpsed as a moderately large
(1.0'-1.5') extremely faint disc. Confirmed several times with
concentration and averted vision but near my visual threshold and only
visible ~10% of the time. Estimate V = 15.0-15.5.
K1_16 RA 18,21.8 DEC +64,22 MAG 14.6 CSM 15.1 SIZE 130"xl00" on 09/06/96. At 134X, large, unsteady, very faint, diffuse disk, requiring the O-III filter and heavy duty averted vision. Could not see with other filters. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M2_39 = PK 8-4.1
18 22.0 -24 11
17.5: at 220x without filter, appears faint with a very small but definite
disc, estimate 5" diameter and V = 14.5. Forms a close "double" with
a mag
11 star just 30" SE. Good contrast gain with OIII filter. First of two
planetaries in the field with pn M2-42 7' ENE.
M2_41 = PK 2-7.1
VIEW IMAGE
18 22.6 -30 44
13: at 166x with UHC filter a small disc of 10"-15" diameter is visible,
estimate V = 13.6-14.0, can be held steadily with averted vision. Visible
without filter but appears very faint at 166x.
M2_42 = PK 8-4.2
18 22.6 -24 10
17.5: at 220x, visible without filter as a "soft" mag 14 star. Located
2.8' ESE of mag 9.1 SAO 186728 and on a line with two mag 13 stars 1.1' SSW and 1.9' SSW. Excellent contrast gain with OIII, appears just nonstellar,
about 3" diameter. Located in a rich star field in the same high power
field with pn M2-39 7' WSW.
Ngc6620 = PK 5-6.1 = E522-PN26
18 22.9 -26 49
13: stellar planetary at 79x located 2.1' NW a mag 10.5 star. Verified
with OIII blinking. At 214x and UHC filter appears moderately bright and a
very small disc about 4" diameter is visible. A mag 13 star lies 0.9' E.
M1_45 RA 18,23.1 DEC
-19,17 MAG ? CSM 16.8 SIZE stellar, on 09/06/96. Tried to find this PN but had
no luck. Identified the field in the SEC finderchart.
Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
KFL19 RA 18,23.1 DEC
-29,43 MAG 16.7 CSM ? SIZE 8" on 08/16/98. Tried to find this PN but had no
luck. Identified the field in the SEC finderchart.
Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
K3_1 = PK 32+7.1
18 23.4 +03 36
17.5: at 220x without filter, a faint, compact disc is visible, good
contrast gain with OIII filter. A 6" disc is visible unfiltered at 280x.
Similar in size to pn M1-52 but slightly brighter, estimate V = 14.1-14.5.
M3_53 = PK 19+0.1 = PN G 019.9+00.9
18,24.1 -11,07
MAG 19.6 SIZE 6"x4" on 8/20/00. Tried to find this PN but had no
luck. Did
identify the field in the SEC finderchart. Kent Wallace, Navaho Flats,
California, 20" f/5 reflector.
PC19 = PK 37+7.2
VIEW IMAGE
18 24.7 +02 29
17.5: at 140x visible as a mag 13.0-13.5 stellar pn. Dramatic contrast
gain with OIII filter. Higher power was not used to examine if disc
resolved.
Haro1_66 =
H1_66 = PK 7-6.1
18 25.0 -25 42
13: at 166x without filter; faint, small, ~10" diameter disc visible,
estimate V = 13.0-13.5. Mild contrast gain with UHC filter. Two mag 12
stars located 42" N and 36" SE.
Sh2_68 = PK 30+6.1 = YM15
VIEW IMAGE
18 25.0 +00 52
17.5: at 83x and OIII filter appears as a very faint, very large, roundish
glow, fairly sharp-edged. Can almost hold steadily with averted. Located
17' WNW of mag 6.9 SAO 123471. Recent 1983 discovery and possibly a HII
region.
Sh 2_68 = PK 30+6.1 = YM15 = LBN93 = Simeiz291 (7/2000)
18 24 58.5 +00 51 38
V = 11.2; Size 475"x330"
At 100x using an OIII filter, Sh 2-68 appears a very large, round, low
surface brightness glow, perhaps 5'-6' in diameter. Requires averted vision
but can be seen readily. The halo has a fairly crisp edge and surface
brightness is uniform. Not seen unfiltered.
Sh2_68 RA 18,25.0 DEC +00,52 MAG ? CSM 16.0b SIZE 400" on 09/26/97. At 79X, very faint large diffuse unsteady blob requiring the O-III filter and averted vision. Fair response to the O-III filter. Poor response to the UHC filter. No response to the H-B ' filter. At 134X, the image was worse compared to that at 79X. This PN was in a dusty area of the Milky Way so could not identify the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
K3_2 RA 18,25.0 DEC -01,31 MAG 19.6 CSM ? SIZE 3" on 10/11/96. Tried to find this PN but had no luck, bright star hurt field. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Haro1_67 =
H1_67 = PK 9-4.1 = E522-PN25
18 25.1 -22 35
17.5: at 225x a mag 11.5-12 star is visible with some faint "haze" off the
NE edge. An OIII filter provides a good contrast gain and the planetary is
clearly nonstellar and appears elongated SW-NE, although the impression of
elongation may be caused by the brighter superimposed star. A mag 12 star
lies just under 1' W. Estimate V = 14.0 and 8" diameter.
Ngc6629 = PK 9-5.1 = E522-PN26
18 25.7 -23 12
17.5: at 140x, very bright, small, 15" diameter, round, high surface
brightness, crisp-edged. The central star is visible with direct vision.
Mag 9.4 SAO 186802 lies 2.1' SE. At 280x, the mag 13 central star is
easier to pick out within the high surface brightness nebulosity. A mag 15
star is visible 30" NNW and a mag 15.5 star is right at the NE edge.
Ngc6629 = Pk9-5.1 = MV*12.8 18H25.7 -23°12' Sagittarius
To the 8 inch G123x, PN very small with the OIII, brilliant and contrasted. TO 255x, one
notes the presence of the central star and to 480x, it is lengthened on an axis N - S. One
notes an iregular aspect. Recognized by Blinking to 48x.
(24/06/1998 T=1 S=2)
Damien Ponsot, France (Legend: T=Transparency; S=Seeing (1=Very Good, 5=
Very Bad)
SaWe3 RA 18,26.1 DEC
-18,12 MAG 15.3 CSM ? SIZE 110" on 08/08/96. VIEW
IMAGE
Tried to find this PN but had
no luck. Identified the field in the SEC finderchart.
Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M2_43 = PK 27+4.1
VIEW IMAGE
18 26.7 -02 43
17.5: extremely faint stellar planetary located 11.5' NNE of mag 8.9 SAO
142314. Barely visible without filter at 140x. Weak response with OIII
filter and only marginally easier to view. Estimate V = mag 15.5.
M2_43 RA 18,26.7 DEC -02,43 MAG 16.8 CSM ? SIZE 15" on 09/26/97. AT 134X & 169X stellar, requiring the O-III filter and averted vision. This is a dusty part of the Milky Way so the SEC is of no use since you can't see any field stars. Good response to the O-III & UHC filters. No response to the H-B filter. At 254X, can see the PN with averted vision alone as a faint star but needed the O-III filter to identify it as a PN. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Wray16_411 RA 18,26.7
DEC -40,3O MAG 15.5 CSM ? SIZE 30" on 07/18/96. VIEW
IMAGE
At 134X, faint small disk,
requiring the O-III filter and averted vision. Good response to the O-III
filter. Fair response to the UHC filter. No response to the H-B filter. The view
at 169X is essentially the same as that at 134X. At 254X, the PN could be
faintly seen with averted vision alone. No central star was visible. Identified
the field in the SEC finderchart. This is a first known visual sighting. Kent
Wallace, Navaho Flats, California, 20" f 5.0 reflector.
K3_3 RA 18,27.2 DEC +01,14
MAG 18.6p CSM ? SIZE 10"x9" on 09/04/99. VIEW
IMAGE
Tried to find this PN but had
no luck. This PN is in a dusty region of the Milky Way. Could not identify the
field in the SEC finderchart. Kent Wallace,
Navaho Flats, California, 20" f 5.0 reflector.
New PN (Skiff list), RA 18,27.2 DEC -14,08.6 MAG ? CSM ? SIZE 11" on 10/14/96. Tried to find this PN but had no luck. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M3_27 = PK 43+11.1
18 27.8 +14 29
17.5: stellar pn verified with OIII blinking at 105x. Easily visible with
0III filter, estimate V = 13.5-14.0v. A pair of mag 12.5 stars at 24"
separation is 3' ENE.
Lo17 RA 18,27.8 DEC -37,16
MAG ? CSM 16.2 SIZE 104" on 08/23/98. VIEW
IMAGE
At 134X, very faint, large, unsteady
diffuse blob, requiring the O-III filter and averted vision. Fair response to
the O-III filter. Poor response to the UHC filter. No response to the H-B
filter. The PN is in a rectangle of stars. Identified the field in the SEC
finderchart. This is a first known visual sighting. The image is worse at 254X. Kent
Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M1_46 RA 18,27.9 DEC
-15,33 MAG 14.6 CSM 12.8 SIZE 12"x10" on 09/09/99.
VIEW IMAGE
At 134X and 169X,
relatively bright star exactly where the SEC finderchart shows this PN to be.
There appears to be a slight response to the O-III, UHC & H-B filters when
using averted vision. Also the filters tend to give this PN a small disk. The
MAG 12.8 central star probably tends to hide this nebula. At 254X, there is a
small disk when using averted vision. All filters tend to show this small disk
better when using averted vision. Kent
Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Vy2_1 = PK 7-6.2
18 28.0 -26 07
13: stellar planetary at 79x, good contrast gain with OIII filter, estimate
V = 13.0. Forms a "double" with a similar mag 13 star 15" NNW!
Appears
stellar up to 214x. First sighted by Jack Marling two days earlier on
7/10/86.
MaC1_13 = PK 22+1.1 = PN G
022.5+01.1 VIEW
IMAGE
18,28.6 -08,43
MAG 18.1 SIZE 17" on 08/21/00. Tried to find this PN but had no luck.
Could not identify the field in the SEC finderchart. Kent Wallace, Navaho
Flats, California, 20" f/5 reflector.
SaSt3_166 RA 18,29.2
DEC -17,27 MAG ? CSM ? SIZE 13" on 08/16/98. VIEW
IMAGE
Tried to find this PN but had
no luck. The SEC finderchart for the field did not identify the PN. Kent
Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Cn1_5 = PK 2-9.1 =
Cannon1_5
18 29.2 -31 30
13: at 166x visible as a bright, stellar object, verified with UHC
blinking, estimate V = 12.0-12.5. At 214x a compact disc 3"-5" diameter is
visible and an obvious small disc was seen at 332x. Forms the northern
vertex of a triangle with mag 8.1 SAO 210220 3.9' SSE and mag 9.1 SAO
210214 2.9' SSW!
M1_47 = PK 11-5.1
18 29.2 -21 47
17.5: at 82x without filter visible as a faint, stellar planetary, good
contrast gain with OIII filter, estimate V = 13.5. Forms a pair with
similar star just 20" N but much brighter than the star using the filter.
At 220x a small disc is visible about 3"-5" diameter.
Sa3_134 RA 18,29.3 DEC
-15,08 MAG 16.5 CSM ? SIZE stellar, on 8/18/96. At 254X, very faint, stellar,
requiring the O-III filter and averted vision. Couldn't have found the PN
without the SEC finderchart. Good response to the O-III & UHC filters. No
response to the H-B filter. This is a first known visual sighting.
Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M1_48 = PK 13-3.1
18 29.5 -19 06
17.5: identified at 220x as an extremely faint stellar object using OIII
blinking and GSC chart. Requires averted vision to see with filter and
could not hold continuously. Without a filter, near the position of the
planetary is a small clump of three faint stars forming a shallow arc but
the planetary does not appears to be visible. Estimate V = 15.5-16.0.
13: not found.
M1_48 RA 18,29.5 DEC -19,06 MAG 15.8 CSM ? SIZE 5" on 09/03/97. At 134X & 169X stellar, requiring the O-III filter and averted vision. Good response to the O-III & UHC filters. No response to the H-B filter. At 254X, can see the PN with averted vision alone but required the UHC filter to identify it as a PN. Identified the field in the SEC finderchart. At 254X the arc of three stars mentioned by steve is visible. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Pe2_14 RA 18,30.0 DEC -19,41 MAG 16.0 CSM ? SIZE 6"x5" on 10/04/97. At 169X, stellar, requiring the O-III filter and averted vision. Good response to the O-III & UHC filters. No response to the H-B filter. At 254X, can see the PN with averted vision alone as a very faint fuzzy star requiring the UHC filter to identify it as a PN. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Abell44 RA 18,30.2 DEC -16,45 MAG 15.8 CSM ? SIZE 63"x39" on 07/07/97. At 134X, faint, relatively good sized, unsteady disk, requiring the O-III filter and averted vision. Good response to the O-III filter. Fair response to the UHC filter. No response to the H-B filter. The PN is involved with a relatively bright star. At 169X, the image is better but it still requires the O-III filter and averted vision. The bulk of the PN is east of the relatively bright star. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Abell45 RA 18,30.3 DEC -11,37 MAG 12.8 CSM 21.1 SIZE 302"x281" on 08/14/98. Tried to find this PN but had no luck. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
MA13 RA 18,30.5 DEC -07,28
MAG ? CSM ? SIZE stellar, on 10/08/96. Tried to find this PN but had no luck.
Identified the field in the SEC finderchart.
Kent Wallace, Navaho Flats, California,
20" f 5.0 reflector.
K3_4 = PK 32+5.1
VIEW IMAGE
18 31.0 +02 25
17.5: at 140x with OIII filter visible as a faint round disc about 10"
diameter. Barely visible unfiltered, estimate V = 14.7-15.2. Located 1.9'
SSW of a mag 10 star which is the following in a string with three other
equally spaced mag 12-14 stars oriented WSW-ENE. A mag 14 star lies 45"
SW. Can hold steadily at 220x using a OIII filter, about 10" diameter,
also visible unfiltered with averted vision.
K3_4 RA 18,31.0 DEC +02,26 MAG 15.8 CSM ? SIZE 13"x11" on 10/04/97. At 134X & 169X, small disk requiring the O-III filter and averted vision. Good response to the O-III & UHC filters. No response to the H-B filter. At 254X, could see the PN as a faint fuzzy patch with averted vision alone but needed the O-III filter to identify it as a PN. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Abell46 = PK 55+16.1
18 31.3 +26 56
13: at 79x with OIII filter appears extremely faint, moderately large, 1.0'
diameter, almost round, can barely hold steadily. Just visible using a UHC
visible although appears near the visual threshold.
Abell46 RA 18,31.3 DEC +26,56 MAG 13.8 CSM 15.0 SIZE 63"x60" on 10/04/97. At 134x, 169X & 254X, relatively good sized disk requiring the O-III filter and averted vision. Good response to the O-III & UHC filters. No response to the H-B filter. The image was best at 134X.Identified the field in the SEC finderchart. There appears to be a central star visible which was shown in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Date and UT of observation: 01 August 1997, about 22h15 UT
Location & latitude: La Clapiere Obs. (France, latN44 40 00, longE06 27 36)
Site classification: rural, alt.1650m (5500ft)
Limiting magnitude (visual in UMi): 6.31
Seeing (1 to 5 - best to worst): 2 (stellar stars until 211x)
Moon up (phase?): no
Instrument: Coulter Newtonian 17.5" F/4.5
Magnification: x211
Filters used: UHC, OIII, Hbeta
Object: Abell46 (PK 55+16 1; PN G055.4+16.0)
Category: Planetary Nebula
Constellation: LYR
Object data: Vmag=14.3; dim.78"x71"; type IIIb+II; central * Vmag=14.87var
(Bmag=14.3-16.0 in 0.4717day, Algol type variable); discovered by Abell in
1955; ELCAT: [OIII 4959+5007]=5x[Hbeta]
RA/DE: 18h31.2m, +26°55' (2000); Uranometria 160
Description: at 211x and OIII, medium sized PN, extremely faint even with filter (hard to draw, the dim red light is still too bright); seen with
filter from 74x and without filter from 125x and up; round and homogeneous;
estimated diameter about 78"; central star of mag15.5 with another of mag16
on the E edge; UHC has a little contrast gain, OII a good one and Hbeta is
of no help at all.
K3_5 RA 18,31.8 DEC +04,05 MAG 17.1 CSM ? SIZE 9" on 08/18/98. At 169X & 254X, faint non-stellar blob requiring the O-III filter and averted vision. Good response to the O-III filter. Fair response to the UHC filter. No response to the H-B filter. At 254X, I thought I could catch a glimpse of the PN with averted vision alone. Identified the field in the SEC finderchart. This is a first known visual sighting. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
He2_406 RA 18,31.9 DEC -24,46 MAG 16.8 CSM ? SIZE 8" on 10/04/97. At 134X & 169X, stellar, faint, requiring the O-III filter and averted vision. Fair response to the O-III & UHC filters. No response to the H-B filter. At 254X, the PN looks slightly non-stellar when using the O-III filter and averted vision. The image is best at 254X. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Hf2_2 RA 18,32.5 DEC
-28,43 MAG 15.7 CSM 18.0p SIZE 17" on 08/16/98. VIEW
IMAGE
At 134X, the PN appears
slightly non stellar, requiring the O-III filter and averted vision. Good
response to the O-III & UHC filters. No response to the H-B filter. AT 169X
& 254X, can see the PN as a small disk, requiring the O-III filter and
averted vision. The image is best at 254X. Identified the field in the SEC
finderchart. Kent Wallace, Navaho Flats,
California, 20" f 5.0 reflector.
Ngc6644 = PK 8-7.2 = E522-PN23
18 32.6 -25 08
17.5: bright bluish "star" at 105x which brightens dramatically with OIII
blinking. A mag 12 star (good for blinking comparison) is 1.0' N. At
286x, a small disc is visible about 4" diameter. Estimate V=11.0.
M3_28 RA 18,32.7 DEC
-10,06 MAG 17.2 CSM ? SIZE 10"x6" on 10/04/97.
VIEW IMAGE
Tried to find this PN
but had no luck. Dusty region so could not identify the field in the SEC
finderchart. Kent Wallace, Navaho Flats,
California, 20" f 5.0 reflector.
M3_54 RA 18,33.1 DEC -13,44 MAG 16.7 CSM ? SIZE stellar, on 09/06/96. At 169X, stellar, moderately bright, requiring the O-III filter and averted vision. Good response to the O-III & UHC filters. No response to the H-B filter. At 254X, the image is best. Identified the field in the SEC finderchart. This is a first known visual sighting. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M3_55 = PK 21-2.1 = PN G 021.7-00.6
18,33.2 -10,15
MAG 19.9 SIZE 8"x7" on 08/21/00. Tried to find this PN but had
no luck.
Did identify the field in the SEC finderchart. Kent Wallace, Navaho Flats,
California, 20" f/5 reflector.
K3_6 = PK 30+4.1 = PN G 031.0+04.1
18,33.3 +00,12
MAG 19.8 SIZE stellar, on 08/22/00. At 134X and 169X, stellar, very faint,
unsteady image, requiring the UHC filter and averted vision. Fair response
to the O-III & UHC filters. No response to the H-B filter. At
254X the
image is very poor. This PN is located in a very dusty region.
Identified
the field in the SEC finderchart. This PN can't be 19.8, more like 16.5.
Kent Wallace, Navaho Flats, California, 20" f/5 reflector.
M1_50 = PK 14-4.1
18 33.4 -18 17
17.5: at 220x seen as a fairly bright, stellar planetary, estimate V =
13.0-13.6. Located 6.1' NNE of mag 6.9 SAO 161592. Responds very well to
UHC blinking. A good comparison star of similar brightness lies 40" N and
a brighter star is 2.3' W. At 286x appears quasi-stellar, about 4"-5"
diameter.
http://www.blackskies.org douglas@blackskies.org 08/31/2001
