Trying to decide between the two. The Tak FC100DF is basically 'unobtanium' at this point. Visual only and funds ARE a consideration)
The Tak FC100DC ($2340) has the following specs:
- Aperture 100mm (Canon/Optron Fluorite doublet objective)
- Focal Length 740mm
- Focal Ratio f/7.4
- Heaviest Single Component 6.16 pounds
- Weight 6.16 pounds (OTA only, no clamp / rings or dovetail, I assume they'll add a couple of pounds)
- Visual Limiting Magnitude 11.8
- Back focus: Can't easily locate info
- I only have a 2" WO dielectric diagonal, so until I could get a premium (prism or mirror) from Baader, I assume I'd need the usual mishmash of expensive Tak adapters)
The AT102EDL ($1,095) has the following specs:
- Aperture 102mm (Hoya FCD-100 + lanthanum mating element)
- Focal Length 711mm
- Focal Ratio f/7
- Heaviest Single Component 9.3 pounds
- Weight 9.3 pounds (this includes rings and dovetail)
- Back Focus 161mm
- ability to use 2" diagonal out of the box
Edited by RobM, 10 January 2021 - 12:39 PM.