Time lapse movie of Comet Hartley 2 as it passed near the Double Cluster in Perseus on 10/08/10. A Full Spectrum Modified Canon 450 XSi DSLR camera was used to capture 3 minute exposures over a 2.5 hour period using a 127mm Astro-Tech Triplet Refractor Telescope. Detailed Canon DSLR camera modification instructions are posted here:
@nufto
With either a "Baader" or "Full Spectrum" modification, the original infrared cut filter is removed and the DSLR sensor can then capture the h-alpha wavelength at nearly 100%. The h-alpha wavelength is responsible for the great red/pink colors in images of nebulae.
@ghonis is there also a noticeable difference in a modded dslr as opposed to pre-mod? in the not too far future i may come to you for 500d mod.
@nufto
Triplet refractors do a better job than doublet refractors for focusing all colors (red, green, blue) to the same point. For astro images in general, doublets will show some false color around stars. "ED" doublets improve the false color, but a good triplet does best at color correction. The drawback is that triplet refractors are the most costly.
is there a noticeable difference between the doublet and triplet such as yours?reason i ask is iam thinking of upgrading to triplet myself.great colour in your images there.
Beautiful! and Good job!
is it just me or does comet Hartley 2 look like an ice encrusted EVE online mmo space ship?
Tight Work!
excellent work – Just great!!! thanks for upload. Here in Germany it is overcast with storm. Too bad!
Good job. Thanks for doing this and uploading it.
Thanks Frank,
This comet has been a dud so far for visual observing, but at least it has some color for imaging.
Gary, absolutely beautiful! Great job.
Frank Colosimo