I want to do deepsky imaging. What difference would it make to image using a APO ED Doublet vs APO ED Triplet?
Lets assume I use a flattener and I am able to do good correction on the Doublet.
Lets assume both Double and Triplet are in par when it comes to quality (same good quality in their own cadre).
Are there very good Doublet refractors that can be considered for astro imaging without having to go to Triplets?
Am looking for 900mm - 1200mm focal length.
My gear
Mount = AM5
Cameras = 2600mm
Filters = Optolong 3nm SHO and LRGB
Edited by Sreesha, 13 April 2025 - 01:06 PM.