ALTER M815 Deluxe

TECHNICAL SPECIFICATION

Parameters	Value
Clear Aperature mm	203
Focal ratio	f/15
Focallength mm	3045±100
Back focus	15-290
Photographic field of View	0°45'
Optical quality for wave length (λ) 0,63 mkm
(P-V)	λ/ 8 or better
CKO (RMS)	0,03
Magnification of system
with eyepiece (12mm or 21 mm)	250/144х
with eyepiece and 2.4 x Barlow Lens	607/347х
Central obstruction	24%
Focusing	by adjustment of the main mirror
Material of body parts	aluminum
Material of primary and secondary mirrors	LK7, LK5 (Sital) with reflective aluminum coating and SiO2 protected
Tube (length, diameter)	665,254
Tubeweight kg	12

SET OF DELIVERY

1 Optical tube assemble – 1pc..

2 Finder (10х50) with finder bracket – 1pc.

3 Eyepiece (12 mm or 21 mm) -1 pc.

4 Barlow Lens - 1pc.

5 Diagonal Mirror – 1pc.

6 Piggy Back cameramount – 1pc.