Tuesday, 7 July 2020 | Simon
The IR Pass filter was intended to improve lunar imaging by reducing the effects of the Earth's atmosphere. Standard screw thread and thickness so easily fitted in filter wheel. Blocked out most light so exposures increased but not excessively and the video caught was much sharper than the unfiltered capture. Definitely worth it for this target and going to experiment on others.
Tuesday, 18 February 2020 | Sindre
Works very well with my ZWO ASI290MC Camera. Very pleased.
Monday, 4 March 2019 | Cathal
I have a few use cases for this filter:
1. for use on planetary objects for video capture under poorer seeing - and this works quite well for that role, even if it results in a monochrome image with most sensors.
2. for IR-illuminated terrestrial views where visible light is an issue, such as wildlife tracking in the back yard.
3. For more consistent guiding on stars under poorer seeing, as IR is less affected by seeing so any movement of the star is more likely to be mount-related than seeing-related. Lower brightness for sure, but this just works pretty well for me.
This filter works really well for both of these purposes. Also, interestingly, using the filter in daytime with an ASI224 makes that effecrively a mono camera and one can get the white vegetation and black sky as per IR film which makes for really interesting time lapses.