SX CCD light path setting
- CCD ~ flange : about 17mm (+- 1mm by flange setting, CCD alignment screws are provided for setting the chip parallel to the focal plane)
- SX Filterwheel : 29mm
- SX Filterwheel + SX OAG : 42mm
* CCD+SX FW+Astrodon GEN2 LRGB : 45mm (17+29-1)
* CCD+SX FW+SX OAG+Astrodon GEN2 LRGB : 58mm (17+42-1)
BF adjustment with filters
Adapter Setting
1) For TAK e180ed (backfocus : 56mm)
* CCD+SX FW+Astrodon GEN2 LRGB : 56 - 45 = 11mm
* CCD+SX FW+SX OAG+Astrodon GEN2 LRGB : 56 - 58 = -2 Need to reduce 2mm
2) For 3inch ADT Corrector (backfocus : 65.8mm)
* CCD+SX FW+Astrodon GEN2 LRGB : 65.8 - 45 = 20.8mm
* CCD+SX FW+SX OAG+Astrodon GEN2 LRGB : 65.8 - 56 = 9.8mm