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Jim Curry
sage
Reged: 10/29/07
Posts: 432
Loc: Maine
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I was poking around northern Pegasus around midnight Sat/Sun looking @ 7331 and neighbors(didn't record any except possible sighting of 7340). I figured giving the seeing there was no way I even glimpsed 7340(mag. 13.7) with my scope. For grins, using Urano, I dropped down to see if I could pick up 7320 @ 12.6. I didn't have a finder chart just used those two 8th? mag stars that Urano shows. In the eyepiece south of them lie two much dimmer stars 11? or fainter(not in Urano). Just south of them I picked ups wisps of something maybe 10-15% of the time, 10 minutes or so of looking @ 133x. I had no confidence in a sighting but made a field sketch. I did not make a recording in my digital log other than to say I looked for it. This morning I went to JR's Website link and opened C chart #128 and zoomed in 1600% on 7320. Low and behold, there were the four stars I referenced above (reversed view of course). Lesson learned: if in doubt about a sighting, sketch it anyway for later research.
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Vixen 140 refractor
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Feidb
super member
Reged: 10/09/09
Posts: 127
Loc: Nevada
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I always enjoy this group. The first time I saw them was at an Okie-Tex in the mid 90's, and it became a standard target ever since. Just recently, I was at Cathedral Gorge in Nevada and all I saw was a fuzzy lump at first. Could not pick out individual galaxies. Then after going back to it, I just barely picked them out. We were having high and low clouds moving through in shifts, and the first time I saw it, it was probably through some high clouds. Lucky I saw it at all. I was going to try for it at Death Valley this weekend, but never got around to it.
I'm surprised you saw anything with a 140.
I agree, sketching is the greatest, especially for reminders later. I'm a horrible artist, but do my stuff well enough to make me happy.
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Present gear:
16" Meade LightBridge
Meade 50mm straight through-finder
Lumicon green laser pointer
Orion Q-70 26mm, 32mm, and 38mm
Parks 2X 2" Barlow
Hyperion 17mm, 8mm
1 1/4" 18mm Russell Optics Bertele
1 1/4" 12.5mm and 6mm Coulter Optical Orthoscopics
1 1/4" X 2" 32mm Edmund Scientific war surplus Erfle
Tirion star atlas (white stars, black background) hand-laminated
Megastar
And a partridge in a pear tree
To nudge or not to nudge, that is the question
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JakeSaloranta
sage
Reged: 09/18/08
Posts: 234
Loc: Sisu, Sauna, Sibelius...
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Hickson 92 is a "good" target for small apertures. I once, many years ago, wrote an article about seeing the group with a 4.5" telescope. I recall seeing 3-4 galaxies with that tiny telescope. NGC 7320 might be just visible to me in my 3" but haven't tried it.
/Jake
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Alvin Huey
Carpal Tunnel
Reged: 10/18/05
Posts: 1831
Loc: NorCal
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Quote:
I'm surprised you saw anything with a 140.
I'm not surprised. I've observed 4 of 5 members with a 6" achro at Lassen Peak parking lot (NELM = 7.5). They were solid and did not require a much averted vision. Could not resolve NGC 7318A/B. I did not see the nearby NGC 7320C.
I was using a 5mm TMB Supermonocentric (SMC) with the Antares 6" f/6.5 achro generating about 198x. I also used the 4mm TMB SMC and could not bust up NGC 7318A/B.
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Clear Skies,
Alvin #26
22" f/4.0 reflector and 30" f/4.3 StarMaster
FaintFuzzies | TAC | TAC-Sac
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7331Peg
professor emeritus
Reged: 09/01/08
Posts: 725
Loc: North coast of Oregon
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I've got Alvin's Antares achro now and I've also seen four of the five with that scope, also was unable to split 7318A and B. I was using six and eight mm Ethos eyepieces. Tranparency that night was about 7 or eight on a scale of ten, skies were sixth magnitude, and I'm 50 feet above sea level. The scope is great!
I've also has a glimpse of the same four with a TV102, but I really had to be persistent and work at it to get them.
John
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saturn3
super member
Reged: 09/12/08
Posts: 124
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Hi,
Which power will it be recommendable for the Quintet?
Thanks
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tatarjj
Pooh-Bah
Reged: 04/20/04
Posts: 1134
Loc: Austin, TX
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1-2mm exit pupil. Personally, I prefer the high side of that, around 1mm exit pupil for faint galaxies, but your milage may very. Exit pupil can be calculated by:
Telescope aperture (in mm) divided by magnification
OR
Eyepiece focal length divided by telescope f ratio.
Really, the correct exit pupil to use depends on the apparent angular span of your target. You would want to use a magnification that would cause your target to span something greater than a few degrees in the eyepiece FOV- the number of degrees in particular is a very fuzzy line. So for bigger like M31 or M33, you'll probably want to use lower powers and larger exit pupils. However, for all but the largest galaxies, use higher powers and smaller exit pupils in the 1-2mm range.
BREAK-
Since we are discussing our first sightings of Stephan's Quintet, I'd like to share that this object was one of my first "serious" galaxy targets I looked at. In 1997 (I guess I was 12 or 13 at the time) I used an Astronomy magazine photo to starhop from NGC 7331 to the Quintet. Once I matched the field, I was able to identify 3-4 galaxies through my 8" dob under magnitude 5.5 skies. Brings back some fond memories and the excitement and wonder of my astronomy newbie days. Really, IMO, beginners have it best in this hobby, everything is so much cooler the first time 
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John T.
Austin, TX
25" f/4.2 Dob
18" Obsession #701
4" Stellar Vue Achromat
8X56 Binos
Edited by tatarjj (10/21/09 06:46 PM)
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Dain
Carpal Tunnel
Reged: 03/24/05
Posts: 1596
Loc: N.Y. Adirondack Mnts. NGC 4565...
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Quote:
Really, IMO, beginners have it best in this hobby, everything is so much cooler the first time
Being at this for some years now..you should see me when I put my first target of the night in the eyepiece. I still react almost the same as the first time I've seen the object.
Clear Skies to All!
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Best,
Dain
Adirondack Mountains (my true dark sky site)
@ Cedar River Flow
Local Site
Clear Skies?
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Feidb
super member
Reged: 10/09/09
Posts: 127
Loc: Nevada
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Dain,
I agree. I get the same thrill each time I find a new object. I even still get it looking at many of the ones I've seen a hundred times.
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Present gear:
16" Meade LightBridge
Meade 50mm straight through-finder
Lumicon green laser pointer
Orion Q-70 26mm, 32mm, and 38mm
Parks 2X 2" Barlow
Hyperion 17mm, 8mm
1 1/4" 18mm Russell Optics Bertele
1 1/4" 12.5mm and 6mm Coulter Optical Orthoscopics
1 1/4" X 2" 32mm Edmund Scientific war surplus Erfle
Tirion star atlas (white stars, black background) hand-laminated
Megastar
And a partridge in a pear tree
To nudge or not to nudge, that is the question
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Mark N
member
Reged: 01/03/06
Posts: 89
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I use an NGC Max computer on my dob. I'm always thrilled to see the object in the eyepiece. M42,M31,M13, it doesn't matter how "common" it is, it's great.
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