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Product Specifications:  SV90T-25SV Apochromatic Triplet

 

Description

Options (extra cost)

Objective

90mm diameter, 630mm focal length (f7), apochromatic triplet with Ohara FPL-53 center element

 

Tube Assembly

Machined aluminum tube - instrument white outside, ultra flat black inside

 

Dimensions

OTA: 19” long, 3 1/2” diameter; 23” long with dew shield extended

 

Weight

OTA: 9 lbs.  R90C clamshell plus optional Vixen rail adds 1.5 lbs

 

Dewshield

4.9” diameter fully retracting dewshield with cap

 

Focuser

2 1/2” dual speed Stellarvue focuser with refractor break, with compression ring and  1 1/4” compression ring adapter

 

Finder

Optional

  1. Red Dot Finder F1001/F1001C
  2. Multi-retical Finder F2/F2A
  3. Optical Finder F50M2/R50A

Rings

Aluminum CNC machined hinged rings (R90). Five 1/4-20 threaded holes on top and bottom - a center hole and two sets spaced 1.5” and 60 mm respectively. Use either a Vixen TP14 rail or a Losmandy TP6 plate.  NOTE:  CNC clamshell can be substituted for the dual rings at no additional cost

 

Case

Heavy duty C18 ultimate travel case

 

Diagonal

Optional

  1. Stellarvue 2” dielectric diagonal UD2

Field Flattener

Optional

  1. SFF7-25 threaded
  2. SFF3-25 for large chip cameras

Light Gain

165x (human eye = 1)

 

Theoretical Resolution

1.3 arc sec (Dawes Limit)

 

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