File:The Hubble Deep Field imaged with a small refractor.jpg

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English: When the Hubble “stared at nothing for 100 hrs” in 1995 it’s WFPC2 camera used 4 different filters. 30.3 hrs of the HDF image was made using the “Red”(606 nm peak) filter at f 12.9.


I wanted to see what can be done today with a small refractor using the QHY16200 CCD with f5.5 and 41 hrs integration time using a red filter. See that tiny red HDF field annotation in the middle? The 800% “Blow up” inverse image at top center shows all the detail that can be extracted and I can find about 30 galaxies versus the 3000 in the Hubble image.

As reference 2 of the brightest Galaxies are marked in both images. But the Knight Observatory Deep field (KODF) image shows many Galaxy clusters, the largest at the Middle right of the image. Only 3 Galaxies in that cluster have a PGC number and the "brightest" 2 are at 2.2 and 4.9 Billion Lightyears distance. (The faintest galaxy in this image that i can identify is PGC30844770 at 8.4 Billion Lightyears)


246x600 seconds, Esprit 100 refractor.

Image dates: 30/11- 1,12,13,16,17,18,20,21,22,23/12 2017.

Software: Sequence Generator Pro, AstroPixelProcessor, Pixinsight.


Original FDH (inset) image by NASA and STScl, rotation and size reduction by Kees Scherer.

en.wikipedia.org/wiki/Hubble_Deep_Field
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Author Keesscherer

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