ALTER M703

TECHNICAL SPECIFICATION

Parameters	Value
Clear Aperature mm	178
Focal ratio	f/10
Focallength mm	1780±100
Back focus	30-250
Photographic field of View	1°20'
Optical quality for wave length (λ) 0,63 mkm
(P-V)	λ/ 6 or better
CKO (RMS)	0,041
Magnification of system
with eyepiece (12mm or 21 mm)	150/85х
with eyepiece and 2.4 x Barlow Lens	300/173х
Central obstruction	32%
Focusing	by adjustment of the main mirror
Material of body parts	aluminum
Material of primary and secondary mirrors	LK7, LK5 (Pyrex) with reflective aluminum coating and SiO2 protected
Tube (length, diameter)	495,220
Tubeweight kg	5,7

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.