Brian, SH posted the positions. I have my doubts that a 6" would see these galaxies. They look interesting but would be a real challenge to see in a 16". 5...
Hi Richard, Thanks for the image of and information on KTC 1. This is one I wasn't aware of. I did a bit of digging around and SIMBAD has this object as a ...
Kent Wallace
kwwallace@...
Jul 1, 2006 5:50 pm
18341
... Hi Mike, I have seen the brighter galaxy (the one closer to GSC 2031 972) twice. The galaxy is not in Guide 7 but I have it logged as MCG +5-36-17 or PGC...
The identification with the Lanning star makes it almost certain that this is a planetary nebula. Richard quoted Lanning's position for the star, which is...
Brian Skiff
bas@...
Jul 1, 2006 6:53 pm
18343
Here is another instance of the coincidence of a uv-bright star and an IRAS source of the right 'colors' to suggest the star is the nucleus of a planetary...
Brian Skiff
bas@...
Jul 1, 2006 8:49 pm
18344
... Yes, that was my initial thought too.. :-) After finding this PN-candidate on one of Richard's narrowband tricolor images, I checked the complete Lanning...
... with "overcorrected" eyeglasses, I took the plunge. For those who are unfamiliar, it has been shown that eyeglasses that are properly corrected for...
You may want to take into account he's observing from a backyard under magnitude 3 or -maybe- 4 skies in the middle of Orange County (think Los Angeles) and...
Hi Mike, Although I haven't tried to see these particular galaxies it seems quite reasonable that you and your friend saw 17-ish magnitude galaxies with 25" ...
Hi Phil, Thanks for the additional object. I'll probably give these two a try with the 20" about 2 or 3 weeks from now. Kn 26 sure has a weird shape on the ...
Kent Wallace
kwwallace@...
Jul 2, 2006 2:21 am
18349
... Okay, glad it's been done. \Brian...
Brian Skiff
bas@...
Jul 2, 2006 2:31 am
18350
Those are exactly the stars. My computer is up and running again so here is a link to the sketch with inversion that I did using my f/8 6" dob at 240X. The...
Alan, Howard, Thanks for the replies. ... Alan's reply reminded me yet again that I should search the amastro archive before I post a question. I now see that...
Hi Bill, Happy to have been of some help in solving the mystery. Your drawing is a good match of Ferrero 27, the cataloged asterism at 15 57 59 +62 32 17. We...
I see now what you mean. The first image you posted matches the little "Cassiopeia" that is at the bottom right of my sketch. The Ferrero 27 coordinates that...
... ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Hi Bill; Then I'm a bit confused. (Nothing new.) That's twice now you've said 240x...and doing a quick 'head calc'...
Greg -- ... At Julian, California in Michael Leigh's 16-inch Schmitt-Cassegrain andf my original I3 [20 dB less sensitive] it wasn't much better and Michael is...
... Mike replied: I agree that you shouldn't necessarily be put off trying for a particular object based on published photometry but ultimately I believe there...
You are correct. The sketch was done at 160X. I don't know why I keep typing 240X. The only thing I can think of is that I'm seriously sleep deprived. The...
... Hi Mike, I don't know if I can add anything to the replies from Alan and Howard on this subject, but I thought that I would throw this into the discussion...
I may add to this that a German amateur made an attempt last week to see Kn 26 with his 18" ( under mediocre conditions ) but failed to do so, so likely a ZLM...
Hi Matthias, Thanks for letting us know about this attempt to see Kn 26 with a 18". I hope to give a try at Navajo Flats with my 20" once the moon gets out of...
Kent Wallace
kwwallace@...
Jul 4, 2006 5:05 pm
18362
It should be noted here that almost all discussions of extra-strength prescriptions for astronomical use seem to refer ONLY to people with myopia. It is...
... Well, since there is a gentle implied criticism of my observing practises for not devoting nights when the seeing permits the use of 400x and higher for...
Kent, yes, there is one ... :-) It's Kn 23. clear skies & good seeing Matthias ... 18". I ... out of the ... Cygnus, ... number ... to ... to ... to ... a ......
... Well, there is the Zenith Limiting Magnitude (ZLM) which is the faintest star you can see with your unaided eye with averted vision when looking overhead...
David Knisely
KA0CZC@...
Jul 6, 2006 2:38 am
18367
... In the sense of being for use in visual astronomy, I think the answer is no. One can certainly measure 'extinction', i.e. how much light is attentuated...
Brian Skiff
bas@...
Jul 6, 2006 3:36 am
18368
Though not a universally "accepted" scale, you might want to check out http://skyandtelescope.com/resources/darksky/article_81_1.asp Steve Gottlieb...
