最近找了一下電動對焦
有兩家FLI feather touch
兩家大家應都不陌生
至於ROBO 沒有整個對焦座 考慮牛頓或馬卡對焦座強度要補強
所以就先不考慮
FLI 看起來比較簡潔 不過轉接環似乎還要去訂做
feather touch似乎比較便宜 各種SIZE都有
大家看能不能也提供意見
目前是以兩吋對焦座來評估
FLI
http://www.flicamera.com/focusers/Atlas Large Payload Focuser
Maximum Payload: 25lbs
Payload at 6" Distance: 10lbs
Minimum Travel: 0.35"
Number of Steps: 105.000
Resolution per Step: 85 nm/step
Weight: 3lbs
PC Interface: USB 2.0
Mechanical Interface: Zero-Tilt Adapter
Compatibility: ASCOM Compatible, Auto-Focus Capable
U.S. Pricing: $2295
Precision Digital Focuser
Minimum Travel: 0.35"
Number of Steps: 7000
Resolution per Step: 1.25 micron
Clear Aperture: 89 mm
Weight: 2.4lbs
PC Interface: USB 2.0
Telescope Side Threads: 3.750"-24 UNS-2B
U.S. Pricing: $1450
DF-2 Specifications
Minimum Travel: 0.20"
Number of Steps: 2000
Resolution per Step: 2.50 micron
Clear Aperture: 50 mm
Weight: 2.0lbs
PC Interface: USB 2.0
Telescope Side Threads: 2.005"-24 UNS-2B
U.S. Pricing: $995
feather touch
MKIT20---Micro Touch Focusing System - 2 Piece Kit(hub/hand control and motor) for Control of 2.0", MPA Retrofits, and Micro Feather Touch® Focusers - WIRED -
http://starlightinstruments.com/store/index.php?route=product/product&path=41&product_id=81$549.00
FTF2015BCR-RP---Feather Touch® Rotatable 2.0" Diameter Rack/Pinion Dual Speed 1.5" Draw Tube Travel, Brake, and Compression Ring
http://starlightinstruments.com/store/index.php?route=product/product&path=37_49&product_id=61$500.00
觀星論壇 
