Question about Hardin Optical STAR HOC 90mm (200 x 90mm) Telescope

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Also looking for a refractor 150mm apo of the brand Hardin of course

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Hardin is now out of business. You never said exactly what your problem is?????

Posted on Oct 13, 2010

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I can not focus the scope using a 1.25 diaganol or by pacing the eyepiece directly into the focus tube. cheers


Some eyepieces will NOT come to focus because the scope does not have enough back-focus, in the focuser. The only thing you can do is try another eyepiece or another eyepiece brand.

Sep 04, 2011 | William Optics ZenithStar 66mm SD Doublet...

1 Answer

Hello


Hi, nice lens. I bet you don't own one.
I am not even going to ask you what your question as as my guess is you would not have chosen so esoteric a category and then not asked the question, so therefore you have a different agenda. Good luck (well average luck).

Mar 02, 2011 | Rodenstock 150mm F5.6 APO Sironar-N Copal...

1 Answer

150mm-500mm 75.6 problem. Sometimes the 'F' stop


hi, idont have your camera brand and model#
but i will say thats could be the electronics contact swith where you insert your lens ,
but not shure these contact are for detecting the lens
just look aside the hole if you have it on
yours if yes try to clean it gently...

Mar 02, 2010 | Cameras

1 Answer

No problem, just a question.


You will need to contact Williams Optic to find out. I am sure they would tell you.

That's a very nice refractor telescope.

Feb 16, 2010 | William Optics FLT-110 Fluoro Star APO...

1 Answer

Cari driver skyview


Go to the ASCOM web site and download the main platform software located here:

http://www.ascom-standards.org/

Then go to downloads and get the driver for your telescope mount.

Oct 19, 2009 | Orion SkyView Pro 100mm ED EQ Apo...

1 Answer

How do you use the manual focus feature. My friend just bought a new one and is having trouble with this part of the lens. I have one for my canon and there is a setting for it


Set either the camera or lens (or both) to manual focus. Most Nikon cameras have the focus selector switch on the front, under the lens release button.

Look through the viewfinder and turn the focus ring until the image (or at least the subject) appears sharp. A green light will light up when the camera thinks the subject under the currently selected focus sensor is sharp.

Sep 18, 2009 | Sigma 150mm f/2.8 EX APO Macro DG HSM for...

1 Answer

Ra ascenntion lock release does not release


Contact Orion customer service:

http://www.telescope.com/control/main/

Oct 23, 2008 | Orion SkyView Pro 100mm ED EQ Apo...

1 Answer

135-400mm lens on nikon d40


Unfortunately, this lens is not supported by the D40 due to Nikon's unfortunate decision to leave out the autofocus motor from this camera.  This is why I tell folks not to waste their money on the D40 - access to the many, many, many lenses that Nikon has made over the years, many of which are available used for a substantial savings, is lost on this camera.  The only Nikon lenses that work are AF-S lenses, and some third party lenses that have their own internal motors.  I got a list of Sigma lenses that are compatible with the D40 for you:
The list of compatible Sigma lenses for the Nikon D40 as of the current date is as follows:
  • 10-20mm F4-5.6 EX DC
  • 12-24mm F4.5-5.6
  • 17-35mm F2.8-4 DG
  • 50-500mm F4-6.3 DG
  • APO 50-150mm F2.8 EX DC HSM
  • 70-200mm F2.8 DG MACRO
  • 80-400mm F4.5-5.6
  • 100-300mm F4 DG
  • 120-300mm F2.8 DG
  • 300-800mm F5.6 DG
  • 14mm F2.8 EX
  • 30mm F1.4 EX DC HSM
  • 150mm F2.8 EX DG
  • 180mm F3.5 EX DG
  • 300mm EX DG
  • 500mm EX DG
  • 800mm f5.6 EX DG
from here:  http://www.imaging-resource.com/NEWS/1177682545.html
Sorry for the bad news.  The cheaper thing at this point may be to sell the D40 and get a D80.  I personally have a D70S, but that is no longer made.  

Dec 06, 2007 | Sigma Zoom Tele 135-400mm f/4.5-5.6 APO...

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