BORG 107FL F3.9ED Astrograph
ITEM #
BG-B10739F
- Telescope Aperture: 107 mm
- Telescope Focal Ratio: f/3.9
- FeatherTouch True 3-inch focuser
- Covers sensor diagonals up to 55 mm
Accessories Added
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BORG 107FL F3.9ED Astrograph
The BORG 107 mm F3.9 Astrograph is a very unique 4-inch portable telescope. Boasting a small size for easy transportation (including airline and overseas expeditions), this astrograph is the perfect telescope for those needing a portable, high-quality optical tube.
- 107 mm aperture
- 6-element advanced Petzval optical system, including one fluorite and one ED elements
- Covers up to a 55 mm diagonal sensor
- Japanese-made high quality carbon fiber tube
- FeatherTouch True 3-inch focuser (FTF3215B-A)
- M57 camera rotator included
- Back focus : 60 mm from M57 camera rotator thread
- 2-inch-long carrying bag
- Fits 115 mm ID mounting rings (optional)
Note: If you need rings, the Borg can use the PrimaLuceLab 115 mm PLUS Support rings: PLL-PLLANSU115P
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SPECIFICATIONS
| Aperture | 107 mm (4.25") |
|---|---|
| Back Focus | 80mm |
| Corrected Image Circle | 55mm |
| Dawes Limit | 1.08 arcseconds |
| Focal Length | 417 mm |
| Focal Ratio | f/3.9 |
| Highest Magnification | 214x |
| Light Gathering Power | 234x |
| Limiting Magnitude | 13.9 |
| Optical Design | Petzval |
| Tube Length | 445mm |
| Tube Weight | 9.5 lbs |
INCLUDED ITEMS
- BORG 107FL F3.9ED Astrograph Optical Tube
- FeatherTouch True 3-inch focuser (FTF3215B-A)
- 21-inch-long carrying bag
- M57 camera rotator