Using my tried and true DSLR on fixed tripod technique to stack hundreds of light, dark, and bias frames in Deep Sky Stacker produced an image I never thought I'd see without a telescope and tracking mount: 3 galaxies in one shot. Very cool! I'm still amazed what a simple DSLR on a fixed tripod can do.
![M82 M81 galaxies with DSLR M82 M81 galaxies with DSLR](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi0Siix8qqk_GyisVevtl4vjZ6IXDOkFKQVTOz9i8Aogm_p_EPc4IneXNy6FIr-Nxb47gICt5Iwdn1BUnDI_9pOJcyJ1JjRP_LUdn-ZFUG4Znmc5ywZlL-wZ9chQw5NevIXEhd4FIPvtnGo/s1600/M81+M82+crop.jpg) |
Stack of 303 subs, 76 darks, 71 bias frames at ISO 3200, 300mm, f/5.6, 1.6 sec Total exposure time after stacking approx 5 min |
![M82 M81 galaxies with DSLR M82 M81 galaxies with DSLR](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgCwcbAZOxDnDfasTv3Z1zYd95EZiPXHH-8AI2f1HCNUDOZSEoaYjo8glvO3fNZwYfKeNuwG8gouJ1rDPVsCTgZR4x0g38L-MPJIJhTUYLfMisBKd6BqJKtIrO0r5wcA2qV_1o7XJyvbbnh/s1600/M81+M82+labels+303s76d71b.jpg) |
Same image as above with labels |
Because these galaxies are so close to the celestial pole, they didn't appear to move as fast as objects near the celestial equator. I definitely took advantage of this and increase my exposure time to 1.6 seconds instead of my usual 1.3 seconds.
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