When to photograph NGC 925
NGC 925 is a galaxy in Triangulum, 11′ x 6′ across at magnitude 10.1.
When to photograph it
From 45° N the best months are October to December, with up to 9.8 hours of astronomical darkness above 30° in November. It reaches 79° at its highest.
From 35° S it never climbs above 30°. It peaks at 21° when it crosses the meridian, low enough that haze and light pollution soften it. It is possible with a clear northern horizon, but hard.
Framing
Its long axis is 11′. It fills 35 to 80% of the short side of an APS-C sensor at about 1750 to 4010 mm, and of a full-frame sensor at about 2700 to 6170 mm.
Filters and the moon
Galaxies are broadband targets. Filters cannot separate their light from light pollution, so dark skies and moon-free nights matter most. The dark sky calendar shows which nights this month are moon-free where you are.
Plan it for tonight
Dates and times depend on your exact location. The imaging planner shows NGC 925's altitude through tonight, its transit time and its distance from the moon. For sub length, use the exposure calculator.
Nearby targets
- NGC 752 7.4° away
- NGC 891 8.8° away
- M 34 9.6° away
- M 33 Triangulum Galaxy 11.7° away
- NGC 1275 Perseus A 13.1° away
- NGC 1333 Embryo Nebula 13.2° away
Gear that suits NGC 925
NGC 925 is 11′ along its long axis. These frame it on an APS-C sensor with room to crop.
- Celestron C8 OTA 2032 mm f/10: fills 41% of an APS-C frame's short side View at High Point Scientific
- Celestron EdgeHD 8 OTA 2032 mm f/10: fills 41% of an APS-C frame's short side View at High Point Scientific
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