Re: Dr Bob's Messier 50yd dash

From: Steve Kudlak ^lt;chromazine_at_No-Spam>
Date: Sun Mar 20 2005 - 22:51:42 MST

Actually they were rather pleasantly quaint B&W images so quaint I smell
the developer and the fixer and remember processing sheet film/120 roll
film!;) .The clear peices of plastic floating in the tray after I turned
the light on after they cleared enough, or took them off the easy load
reels. Nope I never dikd get comfortable with Kinderman metal reels.
Sort of like a nice small college astrophotography course in the summer,
or add some science fiction music and iit would start a vintage
production of somesort.

Have Fun,
Sends Steve

P.S. Of course having your first print/photgram come up on the "blank"
piece of photographic paper are also pleasant memories as much as I like
digital imaging.

Richard Crisp wrote:

> http://www.orfe.princeton.edu/~rvdb/images/Messier50mDash/
> <http://www.orfe.princeton.edu/%7Ervdb/images/Messier50mDash/>
>
> quoting from Dr. Bob Vanderbei
>
> ----
> *From:* Robert Vanderbei <rvdb@No-Spam
> <http://groups.yahoo.com/group/SBIG/post?postID=lD-qThxYwGOv1GMQ0rt5w0qhlctah_VnwrCPO67fVzS-JPCvjyxaKmMUkwLUl4pt9C_dfsdoeEjwFl3W4Q>>
>
> *Date:* Sun Mar 20, 2005 9:07 am
> *Subject:* A new challenge---the Messier 50m dash (with photofinish).
>
> ADVERTISEMENT
> click here
> <http://us.ard.yahoo.com/SIG=12b3ii1qs/M=326134.5725307.7174792.1414694/D=groups/S=1705082805:LREC/EXP=1111425244/A=2622207/R=0/SIG=133mgrtd6/*http://www.lendingtree.com/borrower/alliance/from.asp?whereto=homeeq&source=27995&esourceid=27995>
>
>
> In the good old days (whenever that was), the Messier marathon was a
> test of ones
> star hopping ability together with a bit of shear endurance and luck.
> With the advent of GoTo telescopes, some of the rational for a Messier
> marathon
> has disappeared.
> Yet, these things are still fun but maybe it's time to think of a
> different challenge.
> So, I propose a "Messier 50m Dash": locate and identify 50 Messier
> objects as
> quickly as you can using whatever tools you like (goto is fine). To
> make it even
> more fun (at least for those of us into imaging), how about taking a
> picture of each
> one! As a proof of concept, I did this this past Friday evening. The
> gallery of images
> is posted here:
>
> http://www.orfe.princeton.edu/~rvdb/images/Messier50mDash/
> <http://www.orfe.princeton.edu/%7Ervdb/images/Messier50mDash/>
>
> Actually, I was originally
> planning to take pictures of about half the Messier objects before 10pm,
> then grab about
> 5 hours of sleep (since I had to be awake for an all-day meeting on
> Saturday),
> and grab the remaining ones before dawn to do a complete digital
> Messier marathon. But, luck wasn't on
> my side. The evening turned out to be rather murky.
> By the time I got to M3 a little bit after 9pm, the scope was pointed
> well to the east (the direction of NYC), the next several in the usual
> Messier-marathon
> ordered list were galaxies, and the galaxies I'd already imaged were
> rather pathetic
> because of the murk and the quarter moon. So, I stopped to grab some
> zzz's.
> When I awoke at 3am, it was cloudy out. There was no chance to finish a
> marathon. In the end I'd
> taken images of 48 objects. All the galaxies linger on the edge of
> detection. But, the star clusters came
> out rather well. The images were taken binned 3x3. Most are single 10
> second images
> (since the sky glow accounted for about 20000 counts in that time). For
> M42 I popped in
> an Halpha filter and took a one minute exposure. For M45 I popped in a
> blue filter to try
> to bring out some of the nebulosity. In all other cases, I just used a
> clear parfocal filter. I
> refocused a number of times as the temperature was dropping rapidly.
>
> For those of you who, like me, strive for deep, high S/N, images these
> images will seem rather
> awful. But the fun of it is being organized well enough to do this
> quickly. 48 images in 2 hours
> and 8 minutes isn't bad, I suspect. Next time I'll make sure I get at
> least 50.
>
> -- Bob
> Robert J. Vanderbei
> http://www.princeton.edu/~rvdb <http://www.princeton.edu/%7Ervdb>
>
Received on Sun Mar 20 22:49:59 2005


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