Affiliation
American Association of Variable Star Observers (AAVSO)
Thu, 07/12/2012 - 19:40
Hi,
I am getting back into using my ST-402. However, an old problem (present since I first purchased the camera) has reappeared.
I thought I had it fixed, by tweaking thetightness of the washer on the centre wheel.
The (internal) filter wheel is out by 45deg (in a clockwise direction) on each filter, blocking the CCD chip from any light.
Might someone have a suggestion, before I go to the trouble and expense of returning the camera to SBIG.
John
Turn the filter wheel over.
I also had trouble with the filter wheel when I first got it. It would turn by some random amount and end up blocking te CCDS. No amount of tightening seemed to work. I ended up sending it to SBIG. What ever they did has worked perfectly for the past two years. BTW turning the filter wheel over will result in scratched filters, because I'ved tried that.
Jeff
Thanks for the
Hi,
Thanks for the comments. The photometric filter wheel was on correctly (with the filters up), but the screw was a little loose. It seems to be working now.
When I purchased the camera the filter wheel was packaged separately. The washer that was on the shutter wheel would not work with the filter wheel. I think this was because the two wheels have different thicknesses. I experimented with different washers and found one to work with the filter wheel.
Hopefully it wil remain okay now, but if not I might follow Jeff's lead and send mine back to SBIG.
John
John:
I had the same problem which was fixed by finding a washer with the same hole size but slightly wider than the original and not tightening too much.
Kevin
I had a similar problem and just mailed the camera and wheel to SBIG. They fixed it immediately for free and did not charge for returning it .
Ed