Sharpstar RC308 3" Focuser & 2.5" 0.8x Reducer for 10-16" GSO RC Telescopes
The new RC308 kit includes:
- One 3-inch R&P focuser;
- One 2.5-inch 0.8x RC reducer,support full-frame
Suitable for above 10-inch diameter RC systems,can be used for GSO RC perfectly!
Operation Guide




Specifications
Suitable models: 200mm-600mm RC system primary lenses
Focal ratio range: F6-F9
Defocus magnification: 0.8x
Image circle: full frame 44mm
Lenses: 3 pieces
Outer diameter: 74mm (excluding outer ring)
Backfocus: 55mm (M48 thread end to focal plane)
Total length: 46.5mm
Coating: fully-multi-coating
Weight: 0.4kg
Focuser Part

Reducer Part

Astrophotos

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NGC7023 - Iris Nebula:
GSO RC8 / 1600mm - F/8
SHARPSTAR RC2508 Full Frame 0.8x Reducer
MoonLite CSL 2.5" RC Focusers
Nikon D800(Mod)@ISO1600
APM Guiding Scope 50/205
Guiding with QHY5III-290MM
iOptron CEM60
300s x 100 - Light
300s x 25 - Dark
30 - Flat & Bias
total exposure time 500 分
Sequence Generator Pro
Process by PixInsight & Photoshop

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Mr. ZhuLiQun - RC308 system + RC14 inch OTA + ASI6200 camera

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Mr. ZhuLiQun - RC308 system + RC14 inch OTA + ASI6200 camera