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PAGE ELEVEN OF REPORTS: R.A. 18h 33m 30s To 18h 54m 14s
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_51 RA 18,33.5 DEC -11,07 MAG 16.7 CSM ? SIZE 4"x3" on 08/06/96. At 169X, pretty faint, stellar, requiring the UHC filter and averted vision. Fair response to the UHC filter. Poor response to the O-III filter. No response to the H-B filter. The image is better at 254X but is still faint, requiring the UHC filter and averted vision. Identified the field in the SEC finderchart. This is a first known visual sighting. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
We3_1 RA 18,34.0 DEC
+14,49 MAG ? CSM ? SIZE 135" on 09/16/96. VIEW
IMAGE
At 79X, large faint disk,
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.
Identified the field in the SEC finderchart. Higher powers gave a worse image.
This is a first known visual sighting. Kent
Wallace, Navaho Flats, California, 20" f 5.0 reflector.
IC4732 = PK 10-6.1 = E523-PN1
18 34.0 -22 38
13: at 79x appears stellar and verified with OIII blinking, estimate V =
13.0. A brighter mag 10.5 comparison star is located 2.5' W. Appears
stellar at 214x. Planetary Pe 1-13 is located 13' ESE.
M1_52 = PK 17-2.1
18 34.0 -14 52
17.5: at 220x without filter appears very faint and quasi-stellar, estimate
V = 14.4-15.0. Confirmed with OIII and a definite small disc is visible
about 5" diameter. At 412x without filter, visible continuously with
averted. Located within a shallow arc of five mag 11-13 stars 4.8' ESE of
mag 5.7 SAO 161605!
M1_52 RA 18,34.0 DEC -14,52 MAG 15.6 CSM ? SIZE 7"x6" on 10/21/97. 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 sees the PN as a very small, faint, fuzzy patch with averted vision alone but it required 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.
K3_7 = PK 28+2.1
18 34.2 -02 28
17.5: this difficult stellar planetary was identified at 220x and OIII
filter. Visible only 25% of time with averted vision knowing exact
position using a GSC chart. Not visible without filter at 220x. At 82x
could also momentarily glimpse with OIII filter although more difficult to
view. Estimate V = 16.0. Located 1.5' NNE of a mag 12.5 star. This star
is the middle of three stars equally spaced in a 5' string with a mag 11
star to the W and a mag 10 star to the E. A computed visual magnitude of
V = 20 is definitely in error.
K3_7 RA 18,34.2 DEC -02,28 MAG 15.6 CSM ? SIZE 8" on 10/21/97. At 134X, 169X & 254X, 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. Image is best at 254X. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M4_10 = PK 19-2.1
18 34.2 -13 13
17.5: just visible at 220x as a "fuzzy" mag 14.5 star about 1.0' W of a mag
11 star. This star is the southern component of a wide double with a mag
12.5 star 21" N. Nicely enhanced with an OIII filter. Estimate 5"
diameter.
Pe1_13 = PK 10-6.2 = E523-PN3
18 34.9 -22 43
17.5: visible unfiltered at 225x as a very faint small disc just NE of a
mag 14 star. Good contrast gain with an OIII filter and easily held
steadily with direct vision. A mag 12 star lies 1.3' SSW. Estimate V =
14.5 and 5" diameter.
Pe1_13 RA 18,34.9 DEC -22,34 MAG 15.1 CSM 17.3 SIZE 8"x7" on 10/28/97. At 134X, 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, can see a very small fuzzy disk using the UHC filter and averted vision. There is a faint star near the PN. At 254X, can see the PN with averted vision alone as a small fuzzy disk. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Al1 RA 18,34.9 DEC -27,06
MAG 15.2 CSM >18.0b SIZE 13" on 09/02/96. 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.
Abell47 = PK 30+3.1 = PN G
030.8+03.4
18,35.4 -00,14
MAG 19.5 SIZE 17"x15" on 08/22/00. Tried to find this PN but had
no luck.
Could not identify the field in the SEC finderchart due to the dust in this
area. Kent Wallace, Navaho Flats, California, 20" f/5
M1_53 = PK 15-4.1
18 35.8 -17 36
17.5: at 220x without filter appears as a fairly bright, compact planetary,
estimate V = 13.2-13.8. Nice contrast gain with OIII. Forms the S vertex
of a triangle with mag 10-11 stars 1.7' N and 2.3' NW. At 280x a round
disc visible about 6" diameter.
M1_54 = PK 16-4.1
VIEW IMAGE
18 36.2 -17 00
13: at 79x visible as a stellar planetary, good contrast gain with OIII
filter, estimate V = 13.2-13.7. At 214x and UHC filter, a nice small disc
is visible. Disc can also be viewed without filter at 214x. Located 15' E
of mag 7.0 SAO 161631.
GJJC1 in M-22, RA 18,36.4 DEC -23,55 MAG ? CSM 14.3 SIZE 9" on 08/18/98. Tried to find this PN but had no luck. The SEC finderchart is of no value. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
GJJC1 : There are several positive observation reports on this PN located on a special GJJC1 page, along with finder charts.
V_V3_5 =
VV3_5 =PK 14-5.1 = E591-PN9
18 36.5 -19 19
17.5: at 225x a quasi-stellar object is visible just off the E side a mag
11 star (separation 9"). The star forms an isosceles triangle with two mag
10 stars about 4.5' NW and WSW. At moments the planetary appears stellar,
estimate V = 13.0. Using an OIII filter appears similar brightness as the
mag 11 star close W. Good view at 286x; definitely nonstellar and cleanly
resolved from the star. At times, the central star dominates the small
halo. Discovered in 1972 by Voroncov-Vel'Jaminov.
V_V3_5 RA 18,36.5 DEC -19,19 MAG 15.2 CSM 13.3 SIZE stellar, on 10/28/97. At 134X, 169X & 254X, stellar, faint, could see with averted vision alone next to a relatively bright star, forming a pair. Needed the O-III 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. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M1_55 RA 18,36.6 DEC -21,49 MAG ? CSM 13.9 SIZE stellar, on 07/03/97. Can see as a relatively bright star as shown in the SEC finderchart. Directly visable. No response to any filter. The central star is MAG 13.9 so it is probably hiding the nebula. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
V_V3_6 =
VV3_6PK 14-5.2
18 37.2 -19 02
17.5: at 220x without filter visible as a very faint, stellar object,
estimate V = 14.5. Significant contrast gain with OIII filter and with
added contrast becomes fairly prominent. Discovered 1972.
V_V3_6 RA 18,37.2 DEC -19,02 MAG 14.5 CSM ? SIZE stellar, on 10/28/97. At 134X, 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 with averted vision alone as a faint star but required 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.
M2_44 = PK 28+1.1
18 37.6 -03 06
17.5: at 220x a small compact disc is visible, estimate V = 13.5-14.0.
Nice contrast gain with UHC filter. At 286x using UHC appears as a fairly
bright disc about 6" diameter. Located 11' S of mag 6.6 SAO 142439!
M1_56 = PK 16-4.2
VIEW IMAGE
18 37.8 -17 06
17.5: at 140x unfiltered seen as a fairly bright, stellar planetary,
estimate V = 13.2-13.8. Located about 4' N of three mag 9 stars including
SAO 161677 and 16179 and 8.2' N of mag 6.8 SAO 161683. Brightens
dramatically with OIII filter. A brighter mag 12 comparison star for
blinking is just 30" SE. Stellar up to 280x.
M2_45 RA 18,39.4 DEC -04,20 MAG 17.8 CSM >21.0p SIZE 7" on 09/02/99. 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.
M3_29 = PK 4-11.1
18 39.5 -30 41
17.5: at 105x without filter visible as a faint stellar planetary, estimate
V = 13.5-14.0. Verified with UHC filter which has a better contrast gain
than OIII. At 220x without filter a small disc is clearly visible.
Slightly brighter than planetary He 2-418.
M1_57 = PK 22-2.1
18 40.4 -10 40
17.5: appears as a mag 13.5-14 "star" at 220x with a slightly soft
appearance. Good response to OIII blinking. A couple of mag 14.5-15 stars
are near. At 280x definitely nonstellar with a 3" disc containing a
brighter center. Located 4.4' NW of mag 8.9 SAO 161713.
K3_11 RA 18,41.1 DEC
-08,56 MAG ? CSM ? SIZE stellar, on 10/21/97. 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.
M3_30 = PK 17-4.1
VIEW IMAGE
18 41.3 -15 34
17.5: at 225x a faint haze is visible off the WSW side of a mag 11.5-12
star which detracts from viewing. An OIII filter provides an interesting
view as the star is well suppressed and a 15" disc is clearly visible
forming a 15" double with the star just off the following edge. Estimate V
= 14.5.
Pe1_14 = PK 25-0.1 = PN G 025.9-00.9
18,42.1 -06,41
MAG 19.2 SIZE 5" on 08/22/00. 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.
New PN (Skiff list), RA 18,42.4 DEC -14,15.2 MAG ? CSM ? SIZE 18" on 10/08/96. Tried to find this PN but had no luck. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Abell48 RA 18,42.8 DEC -03,13 MAG 17.2 CSM ? SIZE 43"x37" on 08/18/98. 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.
M1_58 = PK 22-3.1
18 43.0 -11 07
13: at 79x appears stellar, estimate V = 13.0, verified with OIII blinking.
At 166x and 214x without filter a nice, small disc is visible about 10"
diameter. The RA in SC 2000 is 1.1 tmin too far E and the PN is plotted
15' too far E on U2000.
PC20 RA 18,43.1 DEC -00,17
MAG ? CSM ? SIZE 10" on 10/08/96. 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.
M1_59 = PK 23-2.1
18 43.3 -09 05
13: at 144x appears stellar, estimate V = 12.5-13.0. Verified with OIII
filter and on CGPN finder chart. Located 15' E of Delta Scuti! At 214x,
still stellar and easily visible.
New PN (Skiff list), RA 18,43.6 DEC +03,46.7 MAG ? CSM ? SIZE 14"x5" on 10/04/96. Tried to find this PN but had no luck. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M1_60 = PK 19-4.1
VIEW IMAGE
18 43.7 -13 45
13: at 79x appears stellar, estimate V = 14.0. Forms a very close double
with a mag 12.5 star just 14" WSW! The planetary is fainter than the star
without filter but brighter with UHC or OIII. Forms an interesting close
pair to blink. Possible first visual sighting, 8/8/86.
We1_7 RA 18,44.1 DEC
-12,13 MAG ? CSM >21.0b SIZE 17" on 10/30/97 & 11/01/97.
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.
M3_31 = PK 14-7.1
18 44.2 -19 54
17.5: appears as a mag 14-14.5 "star" at 220x without filter just 40" SE of
a mag 10 star and 1.9' SE of mag 8.5 SAO 161773! (this is a close equal
double with components 8.9/9.0 at 1.7"). Good contrast gain with OIII
filter although still relatively faint.
He2_418 = PK 4-11.2
VIEW IMAGE
18 44.3 -30 19
17.5: at 220x without filter, a faint, small disc is visible with direct
vision, estimate V = 13.8-14.2. Slightly contrast improvement with UHC
filter. Slightly brighter than pn M3-23. Located 20' SSW of mag 7.5 SAO
210519.
M3_32 = PK 9-9.1
18 44.7 -25 20
17.5: at 105x appears stellar, estimate V = 13.0-13.5. Verified with OIII
blinking. Located just 44" NNE of mag 8.5 SAO 187212 and 2.0' NW of mag
8.9 SAO 187215! Quasi-stellar at 286x with diameter <5".
TDC1 RA 18,44.9 DEC -03,21 MAG ? CSM ? SIZE 6" on 09/03/97. Tried to find this PN but had no luck. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
K3_13 = PK 34+2.1
18 45.4 +02 01
13: not found
K3_13 RA 18,45.4 DEC +02,01 MAG 18.4 CSM ? SIZE
stellar, on 09/04/99. 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.
Pe2_15 RA 18,45.5 DEC
-06,57 MAG 17.4 CSM ? SIZE 3" on 08/20/95. At 254X, extremely faint,
stellar, requiring the O-III filter and averted vision. Identified the field in
SEC finderchart. This is a first known visual sighting.
Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Pe2_15 = PK 26-1.2 = PN G026.0-01.8 (Steve Gottlieb)
18 45 27.6 -06 56 57
V = 17.4; Size 3"
17.5" (8/15/01): difficult to pinpoint exact location in a very rich milky
way field, but once the position was identified, the PN was not visible at
220x or 280x without a filter. At 280x and a UHC filter, Pe 2-15 was a
marginal object, barely glimpsed with averted and concentration perhaps 15%
of the time. Located 4' ENE of 9th magnitude SAO 142585 and 3' NE of a
10th
magnitude star with several fainter stars within 2' including a very close
double 1.6' SE. This PN is barely visible on the DSS and has a computed V
Mag of only 17.4.
K4_5 = PK 26-1.1
VIEW IMAGE
18 45.6 -06 19
17.5: at 220x and OIII filter appears very faint, fairly small, elongated
WSW-ENE, estimate V = 13.9-14.5. Just visible steadily with direct vision
with OIII but not seen without filter.
PC21 = PK 13-7.1
VIEW IMAGE
18 45.6 -20 34
17.5: at 220x a nice 15" disc is visible without filter, estimate V =
13.7-14.3. Brightens considerably with OIII filter. Forms a "double"
with
a mag 13 star 20" SSW. Located 6' NE of V350 Sagittarii (V = 7.1-7.8).
IC4776 = E396-PN2 = PK 2-13.1
18 45.8 -33 21
17.5: at 105x appears bright and stellar, verified with OIII blinking.
Forms a wide 1' pair with a mag 13 star to the S. A mag 11 comparison star
for blinking is 6' ESE. Good contrast gain with filter, extremely high
surface brightness, estimate V = 11.0. At 286x, a small bluish disc is
visible unfiltered. Located 12' ENE of a wide bright double star (7.7/9.5
at 45").
M1_61 = PK 19-5.1
18 45.9 -14 28
17.5: at 140x visible as a bright stellar planetary, estimate V =
12.5-13.0. Significant contrast gain with OIII filter. Appears stellar up
to 280x. Forms a very close double about 6" separation with a fainter star
just WSW. Located 12' W of mag 7.1 SAO 161816.
Pe1_15 RA 18,46.4 DEC -07,15 MAG 16.1 CSM 16.2 SIZE 6"x3" on 08/08/96. At 169X, stellar, faint, requiring the UHC filter and averted vision. Good response to the UHC & O-III filters. No response to the H-B filter. Image is best at 254X. Identified the field in the SEC finderchart. This is a first known visual sighting. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Haro2_48 = H2-48 = PK 11-9.1 = E523-PN7
18 46.5 -23 27
17.5 (8/4/94): at 225x appears as a mag 12.5 "star" which is slightly
fainter than two mag 11.5 stars 3.9' WNW and 3.2' E. An OIII filter
provides a small contrast gain and the stellar planetary appears slightly
brighter than the two comparison stars. Also shows a small but noticeable
contrast gain with a Hß filter (possibly slightly better contrast gain than
OIII ).
17.5 (7/8/94): at the ESO-Strausberg position is a mag 13 "star" which has
a weak but definite response to Hß filtration at 220x. Very difficult to
detect a contrast gain with an OIII filter. Located 11' SW of a mag 9.4
SAO 187279.
M2_46 RA 18,46.6 DEC -08,28 MAG 18.3 CSM ? SIZE 6"x3" on 06/28/95. Tried to find this PN but had no luck. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Pe1_16 = PK 26-2.1
18 47.6 -06 54
13: at 166x and 214x unfiltered, a faint, small disc is visible with
averted vision, about 10" diameter, estimate V = 14.5. Nice sight at 214x
with UHC filter. Forms an equilateral triangle with mag 8.7 SAO 142622
2.2' ESE and mag 9.5 2.5' SSE. First visual sighting with Jack Marling in
17.5" on 9/3/86.
Pe1_17 = PK 24-3.1
18 47.8 -09 09
13: at 166x with OIII filter; very faint, small 10" diameter disc, slightly
elongated SW-NE, almost visible continuously with averted vision, estimate
V = 14.5-15.0. This planetary was the first Perek object viewed together
with Jack Marling in 17.5" on 8/8/86.
Pe1_17 RA 18,47.8 DEC -09,09 MAG 14.8 CSM ? SIZE 8"x7" on 10/28/97. At 134X & 169X, stellar, 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, can see a very small disk using the O-III filter and averted vision. Identified the field in the SEC finderchart. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
M3_33 = PK 9-10.1 = E523-PN9
18 48.2 -25 29
17.5: picked up at 225x as a mag 13 quasi-stellar object forming one vertex
of a small quadrilateral with three mag 13-13.5 stars. Superb contrast
gain with an OIII filter! Very confident that appears nonstellar. A mag
13 star lies 50" E and and mag 13 star is just 20" SW. Estimate V =
13.0-13.5.
K3_14 RA 18,48.5 DEC +10,36 MAG ? CSM 16.2 SIZE stellar, on 09/03/97. Tried to find this PN but had no luck. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Pe1_18 = PK 27-2.1
18 48.8 -05 56
17.5: at 140x and OIII filter appears as a very faint stellar object which
requires averted vision. Located 4.5' NNE of a wide bright double star
…2391=6.5/9.5 at 38"! Once position known, visible with averted without
filter. Open cluster Basel 1 in the field about 10' NW. At 220x
unfiltered, visible as mag 14.5-15.0 "star", mild but definite contrast
gain with OIII filter.
Pe1_18 RA 18,48.8 DEC -05,56 MAG 16.0 CSM ? SIZE 7" on 06/28/95. At 79X, stellar, very faint, requiring the O-III filter and averted vision. At 134X, still stellar, much easier to see, still requires the O-III filter and averted vision. Fair response to the O-III & UHC filters. No response to the H-B filter. At 169X, can see the PN as a very faint star with averted vision alone but needed the UHC filter to verify it as a PN. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Hu2_1 = PK 51+9.1
18 49.8 +20 51
13: bright stellar pn, confirmed with OIII blinking at 79x, estimate V =
11.5. Located 20' SSE of …2401 = 7.1/8.7 at 4". Appears stellar at
all
powers. A star of comparable brightness lies 1.8' SW.
Pe1_19 = PK 26-2.3
18 49.8 -07 02
13: at 166x appears as a very faint, stellar estimate V = 14.5. Verified
with UHC blinking. This object was the second Perek planetary observed on
9/3/86. Also viewed in 17.5" on same evening and recorded as quasi-stellar
with a probable 3" disc resolved.
M1_64 = PK 64+15.1
VIEW IMAGE
18 50.0 +35 15
13: at 166x with UHC filter appears fairly faint, small, round, about 15"
diameter. At 220x unfiltered, a very faint mag 15 star is just visible on
the N edge. No annularity seen at this magnification.
M1_64 = PK 64+15.1 (7/2000)
18 50 02.1 +35 14 36
V = 13.3; Size 17"x17"
Picked up at 220x using a UHC filter. Appeared fairly faint but easily
visible with direct vision as a small, round disc, ~15" diameter. Also
viewed
unfiltered and there is a 15th magnitude star at the north edge. At 280x, the
surface brightness is irregular and the northern rim appears brighter. With
the UHC filter the rim is crisp-edged. The appearance is similar at 380x.
Observer: Yann POTHIER (France)
Your skill: advanced (many years)
Date and UT of observation: 20 July 1993, about 21h30 UT
Location & latitude: La Clapiere Obs. (France, latN44 40 00, longE06 27 36)
Site classification: rural, alt.1650m (5500ft)
Limiting magnitude (visual in UMi): 6.0
Seeing (1 to 5 - best to worst): 3
Moon up (phase?): no
Instrument: Meade SCT 8"/20cm F/10
Magnification: 145x
Filters used: UHC, OIII
Object: M1_64 (PK 64+15 1; PN G064.9+15.5)
Category: Planetary Nebula
Constellation: LYR
Object data: Vmag=13.3; dim.22"x19"; type IV; "elliptical with inner
structures"; central * Vmag=?; discovered by Minkowski in 1964; ELCAT:
[OIII 495+500]=8xHbeta
RA/DE: 18h50m02s, +35°14'36" (2000); Uranometria 117
Description: at 145x, small PN, very faint, nebulous since 100x; estimated
diameter about 20", maybe a little elongated N-S; UHC and OIII filters have
a small contrast gain; difficult at 87x but well seen at 145x with averted
vision; very clearly nebulous at 312x; mag8 star at 6'N, wide double
(30"SO) of mag10+11 at 6'SSO.
HaTr10 RA 18,50.4 DEC
-01,40 MAG ? CSM ? SIZE 25" on 09/12/96. 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.
M1_62 = PK 12-9.1
18 50.5 -22 34
17.5: at 140x unfilitered visible as a mag 13.5-14.0 stellar planetary.
Nice contrast gain with OIII filter. Did not use high power to possibly
resolve disc. Located 16' NNE of mag 7.4 SAO 187331.
CTSS2 = PN G 044.1+05.8
18,50.7 +12,37
MAG 18.2 SIZE stellar on 06/23/00. Tried to find the PN but had no luck.
Did identify the field in the SEC finderchart.
Kent Wallace, Navaho Flats, California, 20" f/5 reflector.
WeSb4, RA 18,50.7 DEC
-01,03 MAG ? CSM ? SIZE 30" on 10/14/96 & 08/18/98.
VIEW IMAGE
Tried to find this
PN but had no luck. The SEC finderchart is worthless. Kent
Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Sa1_8 = PK 20-5.1
18 50.7 -13 34
17.5: at 220x without filter; fairly faint, a very small disc is visible,
estimate V = 13.5-14.0. Good contrast gain with OIII fiilter. Located
just 4.5' NE of mag 6.4 SAO 161893! Discovered 1974 by Sanduleak.
M1_63 = PK 21-5.1
18 51.5 -13 11
17.5: at 105x unfiltered a faint, stellar object is seen, estimate V =
13.5-14.0. Verified with OIII blinking. At 286x, highly suspected compact
disc although poor seeing. Located 1.3' S of a mag 11.5 star and a shallow
arc of stars is just NE. Probable 1st visual sighting on 8/2/86.
K3_15 = PK 41+4.1
18 51.7 +09 55
13: not found
K3_15 RA 18,51.7 DEC +09,55 MAG 18.0 CSM ? SIZE
stellar, on 09/02/99. 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_16 RA 18,53.0 DEC +12,16 MAG 17.7 CSM ? SIZE 8" on 09/02/99. At 134X & 169X, stellar, not too faint, requiring the O-III filter and averted vision. The PN forms a pair with another faint star when viewed through the O-III filter. 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, requiring the UHC filter to identify it as a PN. The SEC finderchart is way overexposed so could not identify the field. This is a first known visual sighting. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
Abell49 = PK 27-3.1
18 53.5 -06 29
17.5: at 100x using a OIII filter appears extremely faint, fairly small,
round, 25"-30" diameter. Only visible with averted vision 20% of the time
or less although glimpsed several times, estimate V = 16.0. Located 2' SE
of a mag 9.5 star and 2' NE of a mag 11 star. Planetary nebula Vy1-4 lies
7' ENE.
Abell49, RA 18,53.5 DEC -06,29 MAG 16.2 CSM >21.0p SIZE 35"x33" on 10/21/97. At 134X, 169X & 254X, faint unsteady disk, requiring the O-III filter and averted vision. Fair response to the O-III & UHC filters. No response to the H-B filter. Identified the field in the SEC finderchart. At 134X, Vy 1-4 is in the same field. Kent Wallace, Navaho Flats, California, 20" f 5.0 reflector.
NGC 6720
= PK 63+13.1 = M57 = Ring Nebula
18 53 35.1 +33 01 45
V = 8.8; Size 86"x63"
17.5" (6/5/99): Viewed under very steady seeing at 380x. The halo is
elongated 4:3 WSW-ENE and clearly brighter along the N and S sides (minor
axis). The ends of the major axis are clearly "thinner" and
slightly fainter
at the following end. The interior has a pale gauzy appearance. The edge
of
the ring has a "wooly" appearance with a strong impression of small
irregular
wisps or filaments hinting at the extremely faint outer halo. The central
star popped in and out of view a few times.
17.5" (7/1/89): extremely faint central star visible for moments at 412x
just
E of center. The central star was held steadily for a few seconds at best
with averted vision. Forms an unusual pair with the extremely faint galaxy
IC 1296 4' NW.
13": very bright, moderately large, slightly elongated WSW-ENE, high
surface
brightness, best example of annularity although interior not dark.
Slightly
fainter at ends of major axis. Central star not seen.
Ngc6720 - M57 - Pk63+13.1 = 18H54.35 +33°01' Lyre
Proper noun : Ring Nebula, The ring of the Lyre
To the 8 inch G :240X, Ring of smoked very bright The part superior is denser and one
distinguishes fine extension on quoted them of the cloudy. The central star is not
visible. To the 13 inch G92X, absolutely magnificent and contacted, extensions are well
visible as the density stronger on the part superior. To the T140 the ring is visible to
20s. FROM what increase is visible it ? 01/01/1997 T=1 S=1)
Damien Ponsot, France (Legend: T=Transparency; S=Seeing (1=Very Good, 5=
Very Bad)
Vy1_4 = PK 27-3.2
VIEW IMAGE
18 54.0 -06 26
17.5: at 220x appears as the southern component of a close pair of 13th mag
"stars" oriented N-S with a separation of 12", estimate V = 13.0.
Located
in a rich star field 45' ESE of M11. Dramatic gain with OIII filter and
the planetary appears slightly fuzzy or quasi-stellar. At 410x, estimate
5" diameter. An extremely faint planetary Abell49 lies 7' WSW.
http://www.blackskies.org douglas@blackskies.org 08/31/2001
