Quote:
Originally Posted by p1taylor
Hi All, Hope sum one can help, I have seen a plug in for PHD that puts a set of parallel of lines in a cross to help setting star on slit you can adjust with of space between lines.
peter
|
When I use phd for guiding on the slit I use the bulls eye overlay. Aim the scope at something bright like an illuminated wall so that you can easily see where the slit is. Then take note of where it is in relation to the overlay. I tried the grid overlay but there were too many lines and it is easy to get them mixed up. Using my L200 the slit is just beside one of the bullseye circles.
When you know where the slit is you can aim at your target star. I take quick exposures and move the target star towards the slit. When it mostly disappears it is on the slit. You then have to decide whether to guide on the slit or a field star. I find for a bright star that I guide on the secondary reflection that is just near the slit. If the star is dimmer then the secondary reflection isn't bright enough so I will use a field star.
Good luck.