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

Spike-A Flat Fielder

  • Please log in to reply
2 replies to this topic

#1 HaleBopper

HaleBopper

    Viking 1

  • -----
  • topic starter
  • Posts: 867
  • Joined: 14 Jan 2008
  • Loc: Land of Ice and Snow

Posted 17 August 2019 - 09:40 AM

So I went ahead and order the Spike-A flat Fielder from here:

 

http://www.spike-a.com/flatfielders/

 

I got the standard version to cover my range of scopes. C11 is my largest and I doubt I'll ever go bigger than that. I watch this video on youtube and it convinced me to try it.

 

https://www.youtube....h?v=WhSw0alwXHM

 

So far I have not tried the dimmer, but I'm planning on moving on from the DSLR and I've read some CMOS cameras have a hard time taking flats if the exposure is too short, (I think it was the asi 294??) and I though with a dimmer on the panel I could just adjust it to what works well.

 

I tried a quick capture on my C11 at full power with my DSLR and got a 1/200 exposure on Av mode. I didn't really adjust the focus from the last time I went out so it probably does not mimic the focus I used when capturing lights. This was just a test anyway and I'll include a pic of the flat. I have a dark shadow at the top which is due to my OAG. We'll see how well this works out when I use in my next outing.

 

One thing I did not care for, there is some crud between the LED lights and the screen. I'll see if it makes a difference in the flats calibration. Might have to take it apart to clean it.

Attached Thumbnails

  • flatpanel.jpg


#2 Dan Crowson

Dan Crowson

    Vanguard

  • *****
  • Moderators
  • Posts: 2181
  • Joined: 08 Oct 2010
  • Loc: Dardenne Prairie, MO

Posted 17 August 2019 - 10:14 AM

I've had good luck with mine. We actually have three of these with dimmers in our remote observatory. Even with my scope left wide open in the south west New Mexico, I tend to take flats a couple times a year. 
 
One of my observatory partners - Andy Galasso (PHD) - made an Alnitak emulator for these panels with the dimmer. You can use this program to control the panel from SGP and other programs - https://adgsoftware.com/alnitak_emu/.

Dan



#3 HaleBopper

HaleBopper

    Viking 1

  • -----
  • topic starter
  • Posts: 867
  • Joined: 14 Jan 2008
  • Loc: Land of Ice and Snow

Posted 17 August 2019 - 11:32 AM

Great, thanks for the info!




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