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| Catalogue and alternative designations | NGC
2261, Hubble's variable nebula
|
| Type | Reflection Nebula |
| Position | 6 39 10, +8 45 |
| Constellation | Monoceros |
| Camera and Telescope | STXL6303 and 36.8 cmRitchey Chretien |
| Focal Ratio | F9 |
| Exposure Details | LRGB 60, 50,35, 60 all unbinned using Astrodon filters |
| Description | NGC 2261 which is also known as Hubble's variable nebula is an interesting reflection nebula discovered by Herschel in 1783. It was extensively studied by Hubble because of its variable nature which is caused by shadowing from the variable star R Monocerotis. NGC 2261 was the first light object for the 200 inch reflector at Mt Palomar |