Gary Imm

GaryI

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A backyard amateur astrophotographer enjoying retirement with my wife on beautiful Lake Livingston in Onalaska, Texas, about 90 minutes north of Houston.

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Faint Giants Catalog (Complete) A collection by Gary Imm

I have previously posted 6 compilation posters of deep sky object catalogs. Together these 6 catalogues contain 655 of the most interesting objects in the heavens.  A key aspect is that there is no overlap of the above catalogues - each object appears only one time and is unique.

One category not included in the above work, and only made practical with the advent of fast scope setups, in that of very faint objects.  This post adds 109 objects in a catalogue that I call Faint Giants.  Not of these objects were included in any of the previous 6 catalogues.  In total, these 7 catalogues now identify 764 unique objects which represent the best of the heavens for imaging from one's backyard.

The objects in the Faint Giants catalogue are not popular targets, with no NGC members as the primary target and few object nicknames in sight.  This catalogue was the result of two years of sorting, ranking, and then imaging a pool of objects, which I eventually culled down to these 109.

The Faint Giant breakdown by object type is as follows:
- 30 Emission Nebulae (HII-dominated)
- 29 Dark Nebulae
- 23 Molecular Clouds
- 9 Planetary Nebulae
- 8 Supernova Remnants
- 4 Emission Nebulae (full narrowband)
- 3 Reflection Nebulae
- 3 Dwarf Galaxies

Most of the FOVs here are in the 2 to 3 degree wide range.

Although it is possible to image all of these objects with any setup, I recommend a setup with a focal ratio of 5 or less.  Otherwise, the faint nature of these objects will require 10 to 20 hours of integration time to achieve the signal that you see here.  The RASA/6200 scope and camera combination that I used for most of these images, usually with integration times from 2 to 4 hours, has a focal ratio of f/2.2.

Images in this collection Parent collection:  Catalogs