DPReview.com is closing April 10th - Find out more

anyone modded eos r successfully for astrophotography?

Started Nov 18, 2020 | Discussions thread
Franz Kerschbaum
Franz Kerschbaum Senior Member • Posts: 1,242
Re: anyone modded eos r successfully for astrophotography?
3

Concerning the bright star problem Marco mentioned a short asessment and cure from my side:

As shown by quite some recent examples the EOS Ra has a problem with extremely brigth stars in the filed by showing red internal reflexions. This is NOT a problem of the lens but something close to the sensor/filter stack!

The Astronomik UV-IR Block L2 clip-in filter provides an easy cure.

I tested the Astronomik L2 Clip-in in my eos Ra and the RF85/1.2 with the extremely saturated Mars. The reflexions are gone more or less and no significant flux is lost and the WB shift is marginal and easy to fix. I also measured the relevant transmission curve and show it in the insert.

So, in these rare caes wher ther is an extremely bright object in the field this clip-in filter saves us quite some editing time ...

Ra, RF85/1.2@2.0, 30s, ISO3200), with (ul) and without (ur, lower) Astronomik UV IR L2 block clip-in filter

 Franz Kerschbaum's gear list:Franz Kerschbaum's gear list
Canon EOS 5D Mark II Canon EOS 7D Mark II Canon EOS M6 Canon EOS Ra Canon EOS R5 +30 more
Post (hide subjects) Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow