ngc7789

[alacant]

Hi everyone

Closing in on the ff spacing a mm at a time. The documentations gives 128mm. Here we are at 132mm and counting. Can't be far off now. The big challenge here was removing the moon gradient...

I know it's a long shot, but is anyone else using the tsflat2 and willing to share their spacings? As a non-refractor guy, this ff stuff is quite daunting.

Cheers and thanks for looking.

700d 72ed tsflat2

 

Edited October 6, 2020 by alacant

[MarkAR]

Lovely field of stars with very nice colour.

 

[Tommohawk]

Looks very nice!

FWIW I share your pain with refractor spacing blues - I had to completely give up with one scope. But that image looks fine for star shape, doesn't it? 

[alacant]

1 hour ago, Tommohawk said:

pain with refractor spacin

Thanks. Good to know. I'm not giving up just yet. The spacing seems to depend upon focal length and according to the -sparse- documentation, the spacing is 128mm for the 72ed. That however is obviously too short as stars in all four corners have tails. Then there's the awful SW focuser with which to contend, tilt, slip and slop... Ah well...