Crab Nebula with C9.25 – Jan 2011

Location: San Bruno, CA

Telescope: Celestron 9.25 with F/d 6.3 reducer on Takahashi NJP-Z Mount

Camera: Qhy8 CCD with Astronomik CLS CCD Filter

This is the result of 16 exposures of 330 sec. The Celestron C9.25 is really a good choice for planetary nebula given its relatively long focal length, and its large aperture.

I find also that many planetary nebula are a nice target when on a light polluted site, since they have a relatively high surface brightness.

What is more important here is to have a night with good seeing conditions,  very good tracking, take multiple shots, and stack!

Software: Maxim DL5, Photoshop CS4, Nik Sharpener

This is a crop of the previous image, showing more details in the Nebula dendrils.

  1. #1 by Paul Anthony Brierley. on September 12, 2012 - 11:21 am

    Your image of Messier 1 is excellent, show’s how good this telescope is for Deep sky imaging.

    I’m upgrading from years of using a 10″ Newtonian to a C9.25 XLT/CGE for this type of work. If my SCT is as good as your’s. Then I will be very happy

  2. #2 by jmeriaux on September 13, 2012 - 11:41 am

    Hi Paul – thanks! Very nice pictures you have on your Flickr stream !
    I found the C9.25″ XLT to be a nice telescope to work-with great quality / price ratio difficult to beat – and esp. good for smaller objects – Galaxies and planetary nebulae. On top of it this is still a scope very easy to handle / operate (weight, compactness) ..
    — Jean-Christophe

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