Using Fuji lenses for astrophotography

Started 3 months ago | Discussions thread
biza43 Forum Pro • Posts: 11,757
Re: Using Fuji lenses for astrophotography


biza43 wrote:

Montanawildlives wrote:

The problem with using long focal lengths in astro photography though is that the star movements will blur quicker at longer focal lengths than wide focal lengths. So while you may be letting in more light, you will have blurry, messy looking stars.

At the same shutter speed, yes, ok.

Enter stacking - take many shots and stack them after. You will get much better results with stacking anyway.

Generally, the rule for "sharp" non blurry stars is exposure time = 500/focal length. Luckily here, there is no exponential function, so doubling focal length only halves the amount of exposure time for sharp stars (see Star trackers to avoid this).


Again stacking is fine, tracked, or untracked.

I don't have a tracker, so my experience is limited, but doesn't stacking only reduces noise caused when using high ISO or pushing exposure in post? It does not offer the same results to tracking stars using longer exposures?

Stacking increases S/N of the end result. For example: 10 shots at 60 sec each = 600 sec total exposure time. You can do without a tracker if your total time is reasonable, stacking software can handle a bit of movement of the stars.

-- hide signature --

 biza43's gear list:biza43's gear list
Fujifilm X-H1 Fujifilm X-T3 Fujifilm XF 35mm F1.4 R Fujifilm XF 60mm F2.4 R Macro Fujifilm XF 16mm F2.8 +1 more
Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow