Apograde review by Ignacio Rodriguez - William Optics

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I decided to perform a simple star test defocusing the view (inside an outside focus) to compare the color leveland the diffraction rings. I used a Meade LPI and a Barlow to capture the images. The power was in the 160X –180X range. There was more color in the SD lens. That was very evident. The FD rings were similar inside anoutside focus although they were more difficult to observe outside of focus. The images do not representexactly what you see at the eyepiece. It is better to use a digital camera. I tried to obtain some images placingthe camera lens at the eyepiece. The detail is better than what I obtain using the Meade LPI however aligningthe lens to a short focal length eyepiece is difficult. It is better to use the telescope as the camera lens as I dowith film photography but I have not moved to DSLR yet. My digital camera does not have removablelens.FD star testSD star test
FD inside focus imaged directly at the eyepiece.I need some expert opinions on these images. The minor circles inside the big ones apparently come from theBarlow lenses but I am not sure. The other reason is that the light does not come from a point source. This is notthe best way to create an artificial star.For another test I used an object located 1500 ft form the telescope. This test was imaged using ISO 400 film.Please don’t take into account some dust and particles in the negative. In this test I found that small blackdetails are better imaged in the FD. Also some black is shown purple in the SD.This is difficult to observe at the eyepiece but a photograph easily registers the difference.FD pictureSD picture
Page 1 and 2: APOGRADE REVIEW 03-29-2006By Ignaci
Page 3 and 4: I had both telescopes for a while a
Page 5 and 6: OM-1 + 0.63 focal reducerRequired h
Page 7: The telescope is about 40 ft from t

Apograde review by Ignacio Rodriguez - William Optics

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