PDA

View Full Version here: : Ghost of Jupiter Nebula 2x converter F11.2


tornado33
25-03-2021, 03:17 PM
With a gibbous moon up, I wanted to image this small bright object. I used a 2x converter on the 10 inch scope with the EOS Ra. No filters. 8 x 2 mins ISO 800. Off axis hand guided. Wind buffeting made it especially challenging. 2800mm focal length is pretty fussy and unforgiving. This is a small full res. crop.
Scott

strongmanmike
25-03-2021, 03:38 PM
She's a wee ripper :thumbsup:

Mike

multiweb
25-03-2021, 03:49 PM
+1 Super result. :thumbsup::thumbsup::thumbsup:

AdamJL
25-03-2021, 03:59 PM
hand guided, what the hell.... that's incredible!!

Alchemy
25-03-2021, 05:57 PM
That’s just going to be a spot on my setup, 2 mins at that FL and hand guided quite some challenge

tornado33
25-03-2021, 08:01 PM
Thanks all. If I balance the scope so its slightly east heavy, it keeps the drive worm gently engaged to minimise backlash and it tracks surprisingly well. I use Sharpcap polar align function to get it within 10 or so arc secs, so no dec drift or correction needed. The off axis guider shows sharp round stars with the Basder Coma Corrector in place. Any periodic error is gradual and correctable. The guide star sits there nicely in the virtual reticle. Last night the wind was the biggest pain. Had to throw out some subs so affected. Just so glad to get a deep. sky image after a huge run of inclement weather.