Check it out! I can form a full sentence! Scopes: Explore Scientific 152mm f/8 Carbon Fiber Triplet, Obsession 15" Classic Camera: SBIG ST-8300M, SBIG FW8 Filter Wheel, Astrodon LRGB and 3nm Narrowband Filters Mount: AP900 Hang out with us at Mount Lemmon Sky Center
Clear skies, Erik
Visual astronomer, main instruments:
Matthias Wirth 16" f/5 Takahashi FS-102 NSV on EM-10 Celestron 1983 C5
Zeiss, TeleVue and Celestron eyepieces
Nikon 18x70 IF-WP Zeiss Victory FL 7x42 Zeiss Victory FL 10x32
- Jared Willson
Quote:If you are seeing the same distortion in about the same amount across the entire image plane, it is almost certainly coma not astigmatism.........Unfortunately, coma can be difficult to address in an air-spaced triplet. Yours is a triplet lens, yes?........You mentioned that you see this visually as well. I assume that this is without the flattener in place, yes? ....
Takahashi FS128, TSA 102, FSQ106N, Losmandy GM-8, Baader Mark V, Leica ASPH, Takahashi, Ethos and Panoptic eyepieces.