Kenza

Here is a bicolor ( Ha + OIII) image of the Crescent nebula. Optics: Equinox 120 Mount: Astrophysics 900 GTO Camera: QSI 690 ( Ha 120’ ; OIII 60’ + Flats ) Post processing: Pixinsight and PS Crescent Nebula Bicolor by Aleksandar Topalov, on Flickr For guiding i use a Lodestar and a 180 mm FL guide scope which gives me an image scale of 9.6 arcsec/pix. My imaging rig gives me 1 “/pix. I know that the guider image scale is way too high. I should probably bring it down to 3-4. Maybe use a barlow? Then i think is Lodestar a good choice for a guiding camera with such big pixel size? You need a really long FL scope to get reasonable image scale. How much would lowering the image scale improve my images?

Thanks for the info. I know about the nosepiece. I don’t think there will be a problem to reach focus, CFF has 180 mm backfocus. I reckon that should be enough.

Hi everyone! I plan to buy the baader mark V bino to use with a CFF 132 triplet and C11. I know that a prism, such as the baader T2 prisms, would be the best choice because of the short glass path. The thing is i already have a perfectly good TV 2” everbrite which i love because of the one piece body construction . My question is will i be able to use this combination at all and are there any restrictions to using this combination? Thanks! Aleksandar