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(Help!) Celestron .7x reducer*(edge11'') + OAG + DSLR. Possible? THANKS!

astrophotography Celestron dslr imaging equipment SCT
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#1 marco_liu

marco_liu

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Posted 17 July 2019 - 07:27 PM

Any advice would be greatly appreciated! I plan to use Celestron's .7x focal reducer on my EdgeHD 1100 with OAG and DSLR. Two questions: 

1. Is this setup possible? Any potential issues?

2. Does Celestron .7x reducer (Edge11) has a 2'' filter thread? If not, what's my best option to add the LPS filter?

 

Thank you in advance!

Marco



#2 Tom K

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Posted 17 July 2019 - 08:02 PM

I don't know what the backfocus requirement for that FR is, but I am sure it is published somewhere.   Your DSLR should have a published backfocus distance, so you just add up that distance, the size of your OAG and whatever is left over you fill in with spacers.   Getting the OAG placed in the system so that the focal point will hit your guide camera sensor can be a fun exercise.




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