Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

VdB 141 Ghost Nebula

  • Please log in to reply
10 replies to this topic

#1 jeffweiss9

jeffweiss9

    Viking 1

  • -----
  • topic starter
  • Posts: 554
  • Joined: 09 Nov 2008
  • Loc: Sunnyvale, CA

Posted 11 July 2016 - 09:44 PM

Here's the first full image with my new FLI ML16200 using a new Riccardi Model 1 1.0x field flattener at f/6:

 

get.jpg

 

It is an 8.2 hr LRGB in dark conditions but with some autofocus problems to be cleared up.

 

A larger crop of the full frame shows more of the nebulosity in the VdB 141 region.

 

get.jpg

 

Thanks for looking.

Cheers,

-Jeff


Edited by jeffweiss9, 11 July 2016 - 09:46 PM.

  • bilgebay, tolgagumus and GA-HAMAL like this

#2 Jim Thommes

Jim Thommes

    Fly Me to the Moon

  • ****-
  • Posts: 5248
  • Joined: 20 Sep 2004
  • Loc: San DiegoCA USA

Posted 11 July 2016 - 10:52 PM

Jeff,

Nice image. Congrats on the on the successful FLI / Riccardi setup and this image.



#3 buckeyestargazer

buckeyestargazer

    Vendor - Buckeyestargazer.net

  • *****
  • Vendors
  • Posts: 4563
  • Joined: 12 Jan 2008
  • Loc: IN, USA

Posted 12 July 2016 - 08:07 AM

Lookin' good Jeff.  I'm impressed that this has only 8.5 hours.  Perhaps the black point is a bit clipped?  It's nice to see an image from that new camera...congrats!



#4 Mark Sibole

Mark Sibole

    Mercury-Atlas

  • *****
  • Posts: 2853
  • Joined: 30 Nov 2007
  • Loc: Fife Lake Mi.

Posted 12 July 2016 - 08:28 AM

Nice start.The black point looks a bit clipped but still a good start.Plan on a ton of time on this one.I think I have over 15 hours on mine just go get it to look half way decent and im in very dark skies.



#5 jeffweiss9

jeffweiss9

    Viking 1

  • -----
  • topic starter
  • Posts: 554
  • Joined: 09 Nov 2008
  • Loc: Sunnyvale, CA

Posted 12 July 2016 - 10:32 AM

Thanks very much for your comments, Jim, Joel and Mark-

Adjusted the black point a bit.

Cheers,

Jeff



#6 Mark Sibole

Mark Sibole

    Mercury-Atlas

  • *****
  • Posts: 2853
  • Joined: 30 Nov 2007
  • Loc: Fife Lake Mi.

Posted 12 July 2016 - 12:21 PM

15 hours of info and still a bit noisy in the dimmer darker nebula just for reference taken with a 102 mm apo

vdB141LRGB-2.jpg


  • bilgebay and leviathan like this

#7 blueman

blueman

    Photon Catcher

  • *****
  • Posts: 6925
  • Joined: 20 Jul 2007
  • Loc: California

Posted 12 July 2016 - 06:16 PM

Nicely done, this is such a great object. Nice to see the new FLI in action.

Blueman


Edited by blueman, 12 July 2016 - 06:16 PM.


#8 tolgagumus

tolgagumus

    Vendor

  • *****
  • Vendors
  • Posts: 3596
  • Joined: 21 Jul 2014
  • Loc: NJ

Posted 12 July 2016 - 08:45 PM

Very nice FLI 16200 looks very good



#9 jeffweiss9

jeffweiss9

    Viking 1

  • -----
  • topic starter
  • Posts: 554
  • Joined: 09 Nov 2008
  • Loc: Sunnyvale, CA

Posted 12 July 2016 - 10:51 PM

Thanks a lot, Floyd and Tolga-

Yes, the FLI 16200 seems to be performing very well. Focus of my optical train seems particularly critical, however, and my current autofocus (TSX @focus2) is not quite doing it for me (yet).

CS/Jeff


Edited by jeffweiss9, 12 July 2016 - 10:52 PM.

  • tolgagumus likes this

#10 tolgagumus

tolgagumus

    Vendor

  • *****
  • Vendors
  • Posts: 3596
  • Joined: 21 Jul 2014
  • Loc: NJ

Posted 13 July 2016 - 01:59 PM

Thanks a lot, Floyd and Tolga-

Yes, the FLI 16200 seems to be performing very well. Focus of my optical train seems particularly critical, however, and my current autofocus (TSX @focus2) is not quite doing it for me (yet).

CS/Jeff

It's most likely a mechanical issue. Slippage or backlash etc. 



#11 jeffweiss9

jeffweiss9

    Viking 1

  • -----
  • topic starter
  • Posts: 554
  • Joined: 09 Nov 2008
  • Loc: Sunnyvale, CA

Posted 14 July 2016 - 12:05 AM

Thanks, Tolga. 

I've already tightened the Feathertouch 3545 3.5" focuser tension adjustment, but I will tighten it some more and start measuring the focuser extension distance to try to see if there is slippage going on.  I have seen focusing degrade with increasing elevation angle over time.  I don't think I have backlash or tilt.

CS/Jeff




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics