16"+20" Dobsonian Telescope "Infinity NL": Technical Specifications





Optics 16 Inch 20 Inch
 
Primary Mirror 400/1700mm 500/2000mm
Focal Ratio f/4.3 f/4.0
Thickness of Primary 25mm 31mm
Weight of Primary 6.3 kg 12.4 kg
 
Strehl Ratio Primary S > 0,90 S > 0,90
Interferom. Test Certificate inclusive inclusive
 
Faintest Star @ V=200x 15.9mag 16.2mag
Faintest Star @ V=350x 16.3mag 16.6mag
Rayleigh Resolution Limit 0.29" 0.23"
 
Secondary Mirror 88mm 102mm
Wave PV lambda/10 lambda/10
Obstruction 22% 21%


Mechanics 16 Inch 20 Inch
 
Transport Mode 1 55x55x25cm 66x66x29cm
Transport Mode 2 55x61x71cm 66x71x77cm
 
Total Weight of Telescope ~ 26 kg ~ 41 kg
Weight of heaviest part ~ 15 kg ~ 23 kg
 
Thickness of trusses 18 mm 20 mm
Max. Length of trusses 115 cm 137 cm
 
Viewing Height Zenith 154cm 181cm


Attachments 16 Inch 20 Inch
 
Focuser 2" Moonlite 2" Moonlite
Reduction Ratio 1:8 1:8
 
Fan for Primary Mirror inclusive inclusive
Secondary Heating inclusive inclusive


Accessories 16 Inch 20 Inch
 
Filter Slide optional optional
Digital Setting Circles optional optional
Counterweight 1kg/2kg optional optional