Tuesday, February 19, 2013

NGC 7810 & Crew with Asteroid ...

Back on 2012/11/10:



I was really just looking to test out the camera and off-axis guider.  The skies were clear, but I needed to dodge the trees and found this on the fly.  Turns out there was an asteroid that +Mike Rector helped me find as 771/Libera.

I put the image down for a while as I didn't get the time for fundamentals like calibration files and a good processing routine down.

Turns out there are more hidden gems in this image.

According to WikiSky and some of the UCAC3 catalogs in SkyCharts/CdC, some of the dimmer but still recognizable stars are mag 17.5 or dimmer or beyond.  I count at least 10 by quick count and according the CdC there are the following in this FOV:


Here's the full resoluion version to look at - http://www.astrobin.com/full/33398/B/?real=&mod=

This is the CdC chart with NGC and PGC catalogs

Click for larger version

or link to Interactive WikiSky chart:
http://goo.gl/99Bhs

Here's a full list of what may be visible in this photo:
Catalog RA DEC Type Name Magn.
PGC 00h02m11.03s +13°10'21.4" Gx 97 m: PGC:97
PGC 00h02m54.28s +13°01'13.6" Gx 215029 m: PGC:215029
PGC 00h01m55.54s +13°14'13.6" Gx 78 m: PGC:78
SAC 00h02m59.47s +13°02'30.6" Gx NGC 7810 m:13.00
SAC 00h01m59.46s +13°11'30.6" Gx NGC 7803 m:13.10
00h03m38.38s +13°14'06.2" As (771) Libera m: 13.5
NGC 00h03m05.48s +13°01'30.5" Gx NGC7810 m:14.00 sbr:13.74
NGC 00h02m05.46s +13°10'30.6" Gx NGC7803 m:14.00 sbr:13.74
PGC 00h02m01.41s +13°11'11.2" Gx NGC7803 m:14.08 PGC:101
PGC 00h03m00.65s +13°02'48.2" Gx NGC7810 m:14.28 PGC:163
PGC 00h02m07.35s +13°11'17.8" Gx 108 m:15.30 PGC:108
PGC 00h01m54.86s +13°13'09.2" Gx 89 m:15.90 PGC:89
PGC 00h02m26.69s +13°10'31.3" Gx 134 m:16.08 PGC:134
PGC 00h01m56.48s +13°11'17.1" Gx 92 m:16.78 PGC:92
PGC 00h02m33.83s +13°19'15.6" Gx 1426263 m:16.86 PGC:1426263
PGC 00h02m45.45s +12°57'59.2" Gx 73211 m:17.30 PGC:73211
PGC 00h03m06.31s +13°18'51.2" Gx 1426100 m:17.66 PGC:1426100
PGC 00h02m59.39s +13°09'29.7" Gx 1422500 m:17.76 PGC:1422500
PGC 00h01m19.61s +13°22'49.7" Gx 1427699 m:17.77 PGC:1427699
PGC 00h03m33.75s +13°10'16.1" Gx 1422807 m:17.84 PGC:1422807
PGC 00h01m50.32s +13°15'38.9" Gx 1424891 m:17.90 PGC:1424891
PGC 00h02m57.77s +12°59'35.1" Gx 215030 m:17.90 PGC:215030
PGC 00h01m32.42s +13°16'57.4" Gx 1425381 m:18.04 PGC:1425381
PGC 00h03m08.86s +13°13'17.6" Gx 1423969 m:18.18 PGC:1423969
PGC 00h01m49.45s +12°54'34.2" Gx 1417100 m:18.40 PGC:1417100

What's truly amazing is HOW many fine details are hidden in a 'quick' 30 minute exposure of a simple, boring area of the sky.

Trying to dig deeper on some galactic stats I found this site:
http://cseligman.com/text/atlas/ngc78.htm#7803

Here the larger and brighter (closer?) galaxy, NGC7803 is estimated at 250 MILLION light-years distant.  Some of the other's I cannot find stats for.  Does this mean they are not measured???

Thanks for reading to the bottom, bonus candy for you!

Mike



Saturday, February 16, 2013

Saturn 2013 is underway!

1st of the season in poor conditions

#2 from Friday am was mostly average at best..

Tuesday, February 12, 2013

Finally a respectable M81/M82



I had to try my budding DSLR skills again.  I had to, the moon was new, the weather is cold with low humidity and the seeing poor (aka no planets).

I fought the typical equipment issues and unforeseen weather, the weather didn't kill me too bad, just a bit.  Clouds came out of no where for 30min then went away.

I learned some things, such as how to tie a knot in your power connectors:

http://www.instructables.com/id/Plug-Extension-Cords-Together/

The UPS didn't protect the USB connectors from loosing sync, so I had to realign and then later I unplugged the focuser as the focus was soft, and ooops, that was the mount again not the focuser, so I gave up.

Sigh.  I'm learning that ISO1600 is less noisy but good signal over the 6400 I was using before.  Mixing ISO's isn't very good, I won't do that again.

Guiding could be better, but I was good for subs up to 5min.

I know I can do even better now that I have some good experience under my belt.  I also have the AC-adapter for the camera now too, so I can go hog-wild!!

Full res is here:
http://www.astrobin.com/32575/

Previous work with the 6" and NO experience here:
http://astromaphilli14.blogspot.com/2009/02/my-1st-light-with-new-setup-m81m82.html
I think I may have to sell the 6"!!!

Thanks for looking and reading!

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Loving husband, proud father, computer geek, astro freak, music lover, sports nut and general fun-loving guy

I think I'm the kind of person who doesn't like strong opinions.  It doesn't matter if I agree with your opinion or not, it's not factual, it never will be 100% factual and I don't care for it.  That's probably why I hate politics.

I've always loved facts, provable facts of nature and things concerning science.  

Over time, I found that most facts are mostly reference and it was the creation of and discovery of new things that intrigued me.

"A good friend once told me you are our memory
without them we equal nothing
And all I can see is the place I wanna be
Suddenly my life was so free
Leaves at my feet, blown to the ground
their echoes are reaching my ears
Nights coming fast, suns going down" - A7x