Quote:
Originally Posted by gregbradley
What size filter is it and what nm?
QHY9 is the KAF8300 sensor which is quite small right? It requires 36mm filters unless the filter is really close to the sensor as in QSI 583 cameras and 1.23 inch filters work there.
What do the light exposures look like or is that Tarantula image an example of what they look like?
Greg.
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Greg
I guess “small” is relative. The KAF8300 is 17.96mm(H) x 13.52mm(V) 5.4um/8.3MP.
Link here
http://www.ccd-labs.com/Qseries/qhy9m.htm
It's not possible to get the filter closer than about 30mm from the sensor.
The Ha filter is a standard 2”/M42 size Astronomik 6nm.
The light image is severely stretched to show the problem but here's a final image. The effect is there but might be a little difficult to see given the jpeg download limitations.
Cheers
Stephen