Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.



Minimum equipment for imaging Rosette?

Recommended Posts

Hi - I am wondering whether it is possible to image the Rosette nebula without any kind of tracking mount, an un-modded DSLR (60D) and either a standard 250mm lens or 400m scope attached?   According to Stellarium the nebula should fit easily into a 250mm f/3.5 lens field of view, and perfectly in a 400mm f/5.6 ST70 scope fov - but without tracking the maximum exposure times are only going to be around ~2" and ~1.25" respectively (roughly).

Is it even worth trying with this kind of very basic setup or would I be wasting my time anyway?

Would adding some kind of light-polution (or other) filter help - or is this nebula one that specifically requires filters in order to even see anything at all?

Thanks in advance,


Share this post

Link to post
Share on other sites

Any object apart from the brightest ones are going to be hard without a tracking EQ mount. Not impossible but you have to tailor your expectations to suit.

The rosette is a fairly large and IMO challenging target, I've managed to capture it (albeit faintly) with a Nikon so it's not impossible. My best advice is to give it a bash and experiment.

Share this post

Link to post
Share on other sites

A tracking mount with guiding if not your  subs will be limited to about 30s ( a well aligned Astrotrack can do 120s with a 300mm lens unguided ), a modded DSLR with a good light pollution or nebula filter, a decent 200~300mm fast lens and about 3 hours of data.


Edited by lensman57

Share this post

Link to post
Share on other sites

I got a reasonable pic of the Rosette using a 340mm or so focal length scope (just about right to fit it all in) with about 2hrs of data in 5min guided subs.... it's a feint object (in comparison with M42 for example) and I doubt you'd get much even at high ISO at 30 sec exposures and at 300mm fl on a tripod you'd get star trails after a second or two.. As has also been said, an hour or two of data would be needed to see much at all... save it for when you have a motorised mount and, even better, when you have guiding.


Share this post

Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.