FAQ
Common questions
Do I need a telescope to start astrophotography?
No, and a telescope is the wrong starting point for most beginners. Widefield Milky Way photography with a DSLR and fast wide-angle lens is more beginner-friendly, produces dramatic results faster, and teaches the fundamentals (polar alignment, exposure settings, dark sky planning) without telescope collimation, focus, and field rotation added on top.
What's the 500-rule for exposure time?
Divide 500 by your focal length to get the maximum exposure in seconds before star trails appear: 14mm gives you about 35 seconds, and 50mm gives about 10. On APS-C cameras, divide by focal length × 1.6. A star tracker bypasses this entirely, letting you shoot 2-5 minute exposures without any trails.
Can I shoot the Milky Way without a tracker?
Yes, with limitations. At 14mm you get about 20-30 seconds before star trails appear. That's enough for a single dramatic shot, but the noise is significant. Stacking 10-20 of those short frames in DeepSkyStacker reduces noise meaningfully. A tracker eliminates the trade-off entirely.
How dark does it need to be?
Bortle 4 or lower gives the best results: a sky where the Milky Way is clearly visible to the naked eye and you can see dust lanes. Bortle 5-6 (suburban skies about an hour from a major city) is workable with a light pollution filter. Bortle 7-9 (urban) produces disappointing results regardless of gear.
What time of year is best for Milky Way photography in the US?
The galactic core is visible from roughly March through October, peaking late April through August. The core rises earlier and stays up longer as summer approaches. Winter skies have different targets (Orion Nebula, Pleiades, Andromeda), but not the classic core arch shot.
What software do I need to process astrophotos?
Start with DeepSkyStacker (free, Windows) to stack multiple exposures and reduce noise, then Lightroom or Darktable (free) for final color and contrast. PixInsight ($450) is where serious astrophotographers land eventually, but it's a steep learning curve that's a distraction until you've mastered basic workflow.