Accessory
Astro-Physics 2.7" Focuser with Feather Touch Micro 9:1 Dual-Speed Knobs (27FOC3E-FT)
Astro-Physics · 2.7" Focuser with Feather Touch Micro 9:1 Dual-Speed Knobs (27FOC3E-FT) · telescope focuser
Key specifications
| Accessory type | Focuser |
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| Weight | 2.5 kg |
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All specifications
| Interface | 4.875"x24 external housing thread; includes 2" (ADA2003A) and 1.25" (ADA125) adapters |
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| Compatible with | AP refractors shipped before July 1, 2001 with the earlier 2.7" focuser; amateur telescope makers |
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About
The 2.7-inch Astro-Physics focuser fitted with a Feather Touch Micro assembly and 9:1 dual-speed knobs, which matter most on fast focal ratios, plus a focusing scale in millimetre graduations for returning to a known position. Astro-Physics offered it as a replacement focuser for refractors shipped before July 2001 and as a choice for telescope makers.