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Old 25-04-2021, 06:56 AM
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Robert_T
aiming for 2nd Halley's

Robert_T is offline
 
Join Date: Oct 2005
Location: Australia
Posts: 2,959
Quote:
Originally Posted by gregbradley View Post
I would expect stars to be tinnier with a reducer because you are taking in a wider field of view so individual everything is at a smaller scale.

I have a Riccardi reducer and it makes things very sensitive to tilt.I put it on a CFF105 and it magnified a tilt error badly. I'll get it right but it will take an hour or so.

The AP has available the extremely high quality Quad TCC which is .72X as a reducer/flattener. I have had one before and its a great accessory giving F4.5 on the AP130. Unfortunately its also expensive. It does work on other refractors to at the right spacing.

Greg.
Ah makes sense Greg. I have the APM tilt adapter as well for the Riccardi and got it pretty close with a lot of fiddling. Does my head in trying to translate from screen to sensor to physical tho. Getting better on the TS flat last night at least. TS flat has however thrown out my focus curve as well though and havne't found NINA settings yet to optimum.
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