IDAS Ha Filter with Canon RP

A friend – Dave tried out IDAS Ha single passband filter 52mm mounted with his modified RP.

I used the Canon RP @ ISO 1600 as I’m having problems using my QHY camera, but they still turned out pretty well considering that not all the pixels are used.  I converted to b/w just so it’s easier to see on the screen.
The Horse Head shot was 41 x 5 min., with the moon 76 degrees away (Phase: Full – 5 days).  The California Nebula was 36 x 5 min. with the moon 29.5 degrees away (Phase: Full + 2 days).

BTW, Ha filters are available at 2.5mm and 3.0mm thickness. 2.5mm is fully par-focal with other IDAS filters. So easy to switch with broadband or dual narrowband filter. 52mm mounted is highly recommended for the full frame sensors.

~ by tedishikawa on November 23, 2021.

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