September 5, 2013: Wolfgang Howurek,
Lower Austria - a new observation!
August 18, 2007: Stephen Waldee, (near) San Jose, California -
(with image & sketch of M15 with Pease1, plus detailed report!)
October 2004: Fred Hissink, the
November 2002: Charles Rose (Mississippi)
September 2001: Dave Healy (Arizona)
June 2001: Jay Reynolds Freeman (California)
October 2000: Wolfgang "Howdii" Howurek and Walter Koprolin
First Report using an 8" f/6 Maksutov-Newtonian [Vienna, Austria])
Second Report using Howdii's 18" f4.4 Dob
October 2000: Christine Churchill, Mike Dickerson, Victoria Brown
(California - Visual Observation & CCD Image)
October 2000: Dave Jurasevich (60" at Mt. Wilson in California)
August 2000: Dave Jurasevich (California)
November 1999: Steve Gottlieb (California)
October 1999: Kent Wallace (California)
September 1999: Denis Boucher & Larry Wood (Canada)
August 1999: Phyllis Lang & Eric Honeycutt (North Carolina)
July 1999: Pease 1 report sent in by Mike Wirths (Canada)
Additional reports contributed by Daniel Restemeier and Dominique Pagé (Canada)
Pease 1 sketch contributed by Daniel Restsemeier (Germany)
(Please note that the dates shown above indicate when the reports were sent in, and may not reflect the actual observation date)
OBSERVATION REPORT (THIRD ) FROM
WOLFGANG HOWUREK, AUSTRIA
I've again done a Pease 1 Observation. Perhaps you can remember my previous observations in 2000, when I did it the first time with my 8" Mak-Newt.
This time I used a 6" f/8 achromatic refractor. My first attempt on August 5th, 2013 was at a local site near Altenmarkt im Thale, Lower Austria, about 40 minutes by car west of Mistelbach (my home town). It was a good night with good seeing. I just observed M15 and was courious if Pease 1 would be possible. I needed 320x to find the trapezium stars, then I could quickly localize this "finger" of light, protruding out from the dense core of M15. However, the "finger" was not resolved at this magnification. I simply know where to look for Pease 1, so I used the UHC filter and tried to spot the PN. After a while of looking with averted vision, a starlike object popped up, so hard that I was stunned.
I had a second good night (September 5th) at Hegerberg near Stössing (Wienerwald region) in Lower Austria, where I again tried to see Pease 1, again with the 6" refractor. This time I wanted to see all this more detailed. I started my quest at 320x. This was enough to find my orientation, to locate this "finger" of light. Then I used 400x and at last 600x of magnification. At 600x I was able to resolve the finger of light in two clumps of stars. This was fine. With UHC I had to go back to 320x, could spot Pease 1 several times. I tried also 400x. This was the optimum I could get. Due to the better skies here I could still see this "finger" of light and at the end of it, Pease 1 popped up as a starlike object, of course with averted vision. I had a really good moment when I saw this.
I have to say, this Bresser 6" f/8 refractor is an inexpensive telescope. However, I star-tested it and found it very well corrected. I have done with it some other high-power observations, and found stars shown as clearly defined diffraction disks. On one occasion at Steyersberger Schwaig, a site near the summit of Hochwechsel, a mountain at the border of Lower Austria and Styria, I had a phantastic view of M57, the ring nebula, including the diffraction disk of its central star. Close to the ring nebula I could see stars down to 15.6 and 15.7 mag. Simply said, this 6" refractor is a darn good scope for the money.
I did a consecutive observation of Pease 1 with a 8" f/10 Meade ACF SCT. It was on September, 7th, one of the best nights I've ever seen here. It was this local site near Altenmarkt im Thale. With the 8" SC I could go up as far as 666x and at this power I could clearly resolve the "finger" in two groups of stars, however these groups were not resolved. With averted vision I found a starlike object a bit asymmetric to the main axis of the two groups of stars. Yes, this was Pease 1! With UHC filter I had to reduce power, but I could cleary see the "finger" of light, and Pease 1 popped up just at this location where I had seen it before. Well, this was nice!
Of course it was by far easier with the 8" SC, however, the 6" refractor did also well. I think this is not the limit. I'll give Pease 1 a chance in my old but very good Ceravolo HD145, a 5.7" f/6 Mak-Newt. I'll let you know!
REPORT FROM STEPHEN WALDEE, CALIFORNIA
This is via a web link to his site
You can read Stephen's
detailed report at his 'Faint
Fuzzy Observations" site - it may be too long to include here.
After observing Pease 1 wit a C14 several years
ago, I was convinced it could not be done with a scope smaller than 14
inches under Dutch skies… But, I decided to find out and made it a
challenge; reading Daniel Restemeier’s report gave rise to the thought
that it would be a struggle, but it could be a nice autumn target for my
new 10” GSO dob!
I relaxed for a few moments and went under my black
‘blinking towel’ to avoid every photon of light. I let M 15
drift through the field of a Nagler 7 (combined with a regular TV 2x
barlow) wich gave me a magnification of 357. At first there was no sign of
Peaase 1; with the OIII only the core of M 15 was visible and without the
whole sparkling cluster appeared. After 15 minutes of blinking the blob of
stars northeast of the core disappeared, except for a faint little
‘star’. During the following minutes nothing seemed to be visible and
the whole blob appeared and disappeared while blinking… But after few
minutes (wich seemed to be hours…) the faint star appeared again and
again! After more then 45 minutes I could draw the conclusion that I had
caught the litte… I was quite a challenge, considering the Dutch skies!
Pease 1 was hardly visible during the next evening, but the third
evening confirmed my observations on the first night! Again I saw Pease 1
several times, but… after hard work at the eyepiece, because it’s
easier written than done!!!
During my observations I used a selfmade blinking tool. This made to job a lot easier and without the risk of an expensive OIII falling out of my hand. It’s a wooden tool with the appearance of a spoon. It has a hole in it wich contains part of the barrel of an old eyepiece (only the filter threads)
It’s important to use the highest
magnification possible in order to recognize the stars near the core of M
15. Especially if one’s working with a ‘small’ telescope like a
10”. You’ll need also a heavy load of perseverance, but that’s
something a die-hard observer is born with I guess…
Pease 1 (in M 15)
Level of Experience:
Telescope: 10" f/5 dobsonian
Eyepieces: 7 mm Nagler-9 mm Nagler 2x Tele Vue barlow, magnifications between 138 and 357.
11/7/2002 6:30-7:30 pm
Tonight I successfully
observed Pease 1 the little planetary nebula associated with the fine
globular cluster M15 in Pegasus using my 17.5" f/5 dobsonian. The
nebula was found by star hopping through the swarm of stars with the aid
of the finder charts at the Pease 1
OBSERVATION OF PEASE 1 BY DAVE HEALY IN ARIZONA
OBSERVATIONS OF GJJC 1 AND PEASE 1 WITH A 10-INCH
- What a fine (successful) effort here to observe with a smaller aperture telescope -
Thanks for your great Planetary Neblae
Web Site! It was very interesting
Howdii's & Walter's Report With The 18" f/4.4:
On October 28, 2000, my
observing partner Walter headed for our observing
Successfully located Pease1 Planetary Nebula, M15, NGC 7078- October 7th 2000.
Robert Ferguson Observatory, Kenwood Ca. 95452
Christine Churchill, Mike Dickerson, Victoria Brown ( Amateur Astronomers)
Telescope: Fruth 14" F/6 Newtonian at Ferguson Observatory.
Camera: CB245 cookbook ccd.
6 - 60 second stacked ccd exposures.
11 by 9 arc-minute field of view.
Chart used was about 3.5 by 3.5 arc-minutes
In addition to the image ( View by Clicking Here ), they successfully observed the PN visually on another evening through a 40". This CCD image is also a very good finding aid for Pease 1. Thanks, Folks!
|We observed Pease 1 this past weekend
(09/29 & 09/30/2000) up at Mt. Wilson Observatory. Used the 60"
reflector at f/16 and spotted it easily with both a 100mm Matsumaya?
(240x) and a 55mm Televue Plossl (435x) eyepiece. I blinked it
both with a 2" Lumicon OIII filter and 2" Meade OIII filter,
feeling that the Lumicon provided a more contrasty view over the Meade.
The planetary was found by the star-hopping method shown on your
website, however this time it was much easier for me to find since I had
a good feel for the star patterns from my previous observation of it
(not to mention 60" of aperture!).
|Object Designation: Pease 1 (in M
Object Type: Planetary Nebula
RA/DEC: 21h29m59s / +12d10m27s
Observer: Dave Jurasevich
Level of Experience: 25+ years
Observing Site: Laguna Mountains, 5600 ft. elev., San Diego County,
Date/Time: August 6, 2000 08:10 UT to 09:48 UT
Moon Illum.: 42%
Moon Rise/Set: 19:00 UT Aug 5 / 06:42 UT Aug 6
Transparency: 6.6 in Area #6 (Pegasus)
Seeing: <1" (Binary BU 75, WDS 21555+1053; 0.82" Sep at epoch 2000.66)
Air Temperature: 66° F
Relative Humidity: <20%
AZM/ALT of Object: 176°25' / 69° 18' at 01:10 PDT
Telescope: 14" SCT f/11 nominal
Eyepieces: 19mm Panoptic, 12.5mm Tak LE, 10.5mm Pentax XL, 7.5mm Tak LE
Magnifications: 225, 340, 390, 545 respectively
I employed a number of eyepiece and filter combinations to find Pease 1,
including a 19mm Panoptic, 12.5mm Takahashi LE, 10.5mm Pentax XL and 7.5mm
Takahashi LE with and without both a Lumicon OIII and UHC filter.
One of the more difficult parts of this search was getting oriented with the Pease 1 Location Chart 2 provided on the Blackskies website. Finding the highlighted 4-star trapezium lying about 1.5 arc-minutes NW of the cluster core on that chart took several minutes, mainly due to the different image scale of the chart and my eyepiece view. Having found that grouping of stars I then star-hopped my way to the vicinity of Pease I by the following
method. Connecting a line from the northwest star (Star A) of the trapezium to the northeast star (Star B) of the trapezium, continue ENE about six times their separation to a star (Star C) similar in magnitude to the two trapezium stars A and B. From Star C follow a line SSE at a PA of about 200° nearly 3 times the separation of the two trapezium stars A and B to a star (Star D) of similar brightness. Drawing a line from the NW star of the
trapezium (Star A) to Star D and continuing in a ESE direction about 1.5 times their separation will bring you to the area of Pease 1, which is between 25" to 30" from the center of M15's core at an estimated position angle of 20°. Using a 12.5mm Takahashi LE eyepiece w/o OIII filter, M15 appeared to have a strongly concentrated central core concentrically placed in a generally round but erose and diffuse outer halo having a nominal
diameter approaching 3x that of the brighter central core. In the vicinity of Pease 1 on the NNE side of the cluster there appeared a faint "finger" of light jutting radially outward about 5 arc-seconds from the edge of the diffuse outer halo. A few faint stars were resolved at the base of this finger where it merged with the outer halo, as was a stellar point near the
tip of the finger. This "finger" area is where I concentrated my search for the planetary nebula.
I initially tried to locate Pease 1 with the 19mm Panoptic (225x) and blinking with an OIII filter but met with no success. Powering up to a 12.5mm Takahashi LE eyepiece (340x) and blinking with an OIII filter I could, after careful study and several minutes of observing finally detect the planetary. It appeared to lie at the tip of the finger previously described and was noted to be similar in brightness to the unfiltered view except that it changed in form from a stellar point to an extended object presenting itself as a tiny round spot of diffuse light when blinked with the OIII filter. With the OIII filter the balance of the cluster dimmed considerably, leaving only the central core and brighter peripheral stars
visible as well as a faint glow from the few stars previously noted at the base of the finger. Clearly however, Pease 1 gained in contrast against its background while the balance of the cluster faded with the OIII filter in place. The most pleasing views were had when blinking with the OIII filter and a 10.5mm Pentax XL eyepiece (390x), the extra magnification bringing the nebula out nicely. Once the exact location of Pease 1 was determined, the nebula could be observed with the OIII filter threaded to the 10.5mm Pentax XL barrel end (no blinking), it being held with averted vision. Finally, the OIII filter was blinked with a 7.5mm Takahashi LE eyepiece (545x) to successfully view the nebula, it being held quite easily using averted vision and marginally using direct vision with this eyepiece/filter combination.
Note: A Lumicon UHC filter was also used with the various eyepieces listed above, however it was found to provide a somewhat less contrasted view of the nebula as compared to the OIII filter.
Pease 1 Observation Report From Steve Gottlieb - Northern California
Pease 1 Report from Kent
Wallace, Atascadero, CA
Received from Denis Boucher on August 30th:
Pease 1 Observing Report From Phyllis
Lang & Eric Honeycutt
Observers: Eric Honeycutt, Phyllis Lang
Pease 1 Observing Report From Mike Wirths (July 1999)
Observer: Mike Wirths
Here is the observing report from Daniel
Restemeier in Germany. His sketch is
|Here is a report from Dominique Pagé of Montreal, Canada
regarding his confirmed observation of Pease 1 in August of
1998. After two nights of intense viewing of M15, he was
able to confirm the identity of Pease 1 using an OIII filter.
Dominique was using a 30" f/4.85 reflector that he built himself!
He has a very nice web page featuring Équinox telescopes and
he is also an author of a 200 page telescope making book
entitled "Construire Son Télescope.", which is also featured on
his web site. In 1999, Dominique says he will pursue viewing
an even greater challenge PN, GJJC 1 in the globular cluster
M22. CONGRATULATIONS DOMINIQUE and Clear Skies!
Planetary Nebula Observer's Home Page