Quote:
Originally Posted by Startrek
Bintel 8” f5 has 2” focuser
Set up is as follows
Nikon camera > Nikon T ring adapter > Baader Mk3 coma corrector > 2” Optolong L Extreme screws into end of coma corrector , then into focuser
From Nikon camera sensor to coma corrector should be around 55mm to achieve focus and eliminate coma
I have a Canon so I didn’t need any additional spacers to achieve focus and eliminate coma but when I use my ZWO2600MC cooled OSC , I needed an additional 2mm spacer to eliminate coma ( sensor to coma corrector ended up 57mm )
You will have to test your new set up and you may or may not need additional spacers or screwed rings ( available from Bintel )
Hope the above helps
Martin
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Thanks Martin, that answers all my questions. I am glad the coma corrector can replace the T2 adapter. Once I receive the OTA (in the next few days) and pending good whether, I’ll experiment to see if spacers are needed.
Many thanks,
Stéphane