first go with staranalyser 200f

[p1taylor]

Last night was a bit cloudy I managed to get 17 shots of MENKAR on my 200 star analyser is set at 43mm from CCD as you can see the only way to get it all on was to angel it do I need to go near or feather away to get it  across at 180, focus is  of  and it is wrong way round but this was only a test to get set up, my setup is,

  TELESCOPE APERTURE        254mm    MEADE 10" RCX
       "         FOCAL RATIO  8f
    SEEING                    3 ARCSEC
    STAR ANALYSER             200
    GRATING TO SENSOR         57mm  down to 25mm SET AT 43mm
    CAMERA PIXEL SIZE         6.45   STARLIGHT XPRES H9C
      "      CCD WIDTH        1392pixels X 1040 STARLIGHT XPRES H9C
  if you need any more info let me know.

 

peter

 

 

[Dave In Vermont]

Those little gratings are truly wonderful!

Sorry I can't be more helpful or offer any tips - I haven't had a chance to get mine up & running yet with a cam. But I'm hoping to turn that around this comming Summertime. In the meantime, I'm enjoying seeing what other folks' are managing to do with them.

Thanks for the look -

Dave

[Macavity]

Yes -- One of the things I re-bought, after selling (at the time regretfully).
Worthwhile investing in Ken's (Harrison's) book. So many possibilities... 

Slightly kick myself that I didn't purchase the accompanying blank ring!
It is useful (a good fit) to align the spectrum along the pixel direction...

[BinocularSky]

4 minutes ago, Macavity said:

Slightly kick myself that I didn't purchase the accompanying blank ring!
It is useful (a good fit) to align the spectrum along the pixel direction...

If you mean what I think you mean, you might find one from a filter will fit.

[p1taylor]

Yes they do seam good, it is gust sorting them out,

peter

[billyharris72]

Interesting - been thinking about one of these myself. Out of interest, what exposure times were you using? I'd be trying this at first with a DSLR and was wondering what a typical exposure time for a sytar ofthis magnitude might be.

Billy.

[p1taylor]

This is 20 x 6 seconds stake in Maxim5 and sorted in Photoshop Levels save as tif.

peter