STARTEST IMAGES GALLERY

 Refractor155_01

Type: Apochromatic Refractor  Triplet
Aperture: 155 mm
Focal length:1085 mm(F7)

startest Images copyright
Markus Ludes (c) 2001

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Inside Focus

Inside Focus

Outside Focus

Outside Focus

A 155,mm triplet Oilspaced super ED Apo.Don't look at the little amount of astigmatism. This comes and goes, under the real sky it is not visible. On the benchtest  it is from time to time visible. The Ronchiimages show a bit overcorrection, also you can see a tiny central zone,which is visible in theeyepiece too,its not a dirt spot,its a real zone.
 
Overal correction is good, startest in green color is excellent

Markus Ludes (APM-Telescopes)

Collimator : 9" F/9 Triplet Super ED TMB Apo / ronchi : 254 lines/inch or 100 lines/cm.

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