Recent Posts

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We've had a couple dark nights with good stars and a visible Milky Way here in Salinas. Time to head for the dark hills. Will be there well before sunset.
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TAC Visual / Triple double with Cor Caroli
« Last post by mccarthymark on June 14, 2017, 12:56:46 PM »
While hunting faint and close pairs with my 12.5-inch last night, I realized there is a "triple double" which includes Cor Caroli!  They're not all physically bound to each other, but it was a nice scene all the same.

Cor Caroli = STF 1692 is the well beloved Alpha Canum Venaticorum and was the start of my star hop for the list of pairs I prepared for the session.  About half a degree to the west was STF 1688, a faint pair (9.24/11.06, 14.4", 343°), yellow A and orangish B, which I identified using 340x.  Next on the list was STF 1702, which was about half a degree to the east of Cor Caroli.  It was a wide orange-yellow pair, 8.72/9.41, 36.1", 82°.

It struck me it might be possible to see all three in the same FOV, so I went down to 71x and 1.1° and yes, I could just squeeze all three in the view, the two fainter Struves just within the field stop on either side of the showpiece in the center.  It helped to have already seen STF 1688, since it was the faintest pair to pick out.

It's these little scenes which give me great satisfaction while observing.  Hope you have something new to look for when observing this old favorite.
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TAC Imaging / Re: M101 Pinwheel Galaxy
« Last post by jeffweiss9 on June 14, 2017, 07:05:35 AM »
Thanks, John.
The LZOS objective on the 130mm isn't too bad.
Clear skies,
Jeff
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TAC Visual / Re: Yosemite club weekends this year...
« Last post by John Pierce on June 13, 2017, 11:06:37 AM »
and in fact, after spending 2 days trying to find a group site or any campsite  within 2 hours drive of Glacier Point, the Santa Cruz Astronomy Club is canceling our appearance there.  I suspect we won't be the only ones this summer.
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TAC Imaging / Re: M101 Pinwheel Galaxy
« Last post by John Pierce on June 13, 2017, 11:05:00 AM »
nice!
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TAC Imaging / M101 Pinwheel Galaxy
« Last post by jeffweiss9 on June 12, 2017, 09:47:18 PM »
Here's a 12.3 hr HaLRGB of M101 just finished:
http://www.astrobin.com/299304/
Imaged at D.A.R.C. Obs.
Cheers,
Jeff
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TAC Visual / Yosemite club weekends this year...
« Last post by John Pierce on June 12, 2017, 05:52:45 PM »
heads up, all you folks who join various astronomy clubs Glacier Point weekends.   The Bridalveil Creek Campground where they normally bunk 'us' won't open until August ....  and they aren't doing what they did in 2005, which was to put us at Badger Pass in an overflow parking lot, so my club, who has next weekend, is scrambling to find alternatives... EVERYTHING is booked solid except some $$$$ B&B kinda places in Oakhurst or Coarsegold (2 hours+ from Glacier Pt, ugh!)
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I did early reservation but unfortunately can't go this year. If you haven't booked your spot and would like to take mine for $50, pls message me.
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TAC Imaging / Re: Lunar imaging question
« Last post by oldfrankland on June 06, 2017, 12:00:11 PM »
Routinely I use the AP button, then place additional points to areas that the AP routine ignored.  Also, using the smallest point frames is not always the best approach, even with some planetary AVIs.  Lots of trial and error, but since it is post processing, you can do that at your leisure.
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TAC Imaging / Re: Lunar imaging question
« Last post by Davids on June 04, 2017, 04:01:23 PM »
An Autostakkert question for you.  Do you use the AP place grid button or do you place your own and how many is enough, or conversly to little.

Dave
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