THE HELIOS 80mm f5 REFRACTOR & EQ1 MOUNT

 

A Helios 80mm short tube refractor on an Eq1 equatorial mount and fitted with a single speed RA drive was purchased second hand (100 with one eyepiece and 90deg diagonal) with a view to it forming the basis of the Portable Imaging System

 

 

Helios 80mm f5 + Eq1 mount and RA drive

 

Vital Statisics

Weights (Kg)

Optical Tube Assembly

1.26

Finder with bracket

0.22

Diagonal and eyepiece

0.18

Mount including RA drive

2.11

Counterweight

2.15

Table top tripod

0.68

   

TOTAL

6.6

 

Dimensions

OTA length (including caps but excluding adapter)

370mm

Distance from axis of OTA to RA shaft

150mm

Number of teeth on RA ring gear

100

 

 

 

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