AstroBin

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The megapixel challenge Anything goes · Paul Ecclestone-Brown · ... · 9 · 825 · 16

WeAreAllStardust 1.20
Paul Ecclestone-Brown
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I just had an idea for a group, the megapixel challenge

We mostly use large cameras now….  But not so long ago sensors were teeny tiny.  Recreate this - and work on the best compostion that you can

Simple rule images must be approx 1 megapixel in size - 1000x1000 pixels is best (or even 1,024 x 1,024 for purists!), 2000x500, whatever

Monochrome, colour, broad or narrow band just as long as they have a million pixels

Find the best bits of your bigger picture…..

Just search for the group in the explore menu…..
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zermelo 7.22
Franco Grimoldi
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Should I assume that down-sampling or binning is not allowed?
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WeAreAllStardust 1.20
Paul Ecclestone-Brown
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As long as the binning is acknowledged in the description and if it still gives a fun image - go for it!
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claytonostler 3.34
Clayton Ostler
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I love your idea, but I can barely take decent images with my current skills and equipment.

Im still trying to get the most of out of my gear as-is. Intentionally limiting my camera is not in the cards, but I would love to see what the pros come up with.
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WeAreAllStardust 1.20
Paul Ecclestone-Brown
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Have a go anyway…..
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aabosarah 9.31
Ashraf AbuSara
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Could be fun. Here are a couple of crops from my a project I am currently working on.  This is a WIP. This is the native image scale at which the image was acquired. It was drizzled 2x for post processing and then downsampled back to the native resolution. So this image scale is the native image scale it was acquired at.

First one is 2000x500
Megapixel1.jpg


This is 1024x1024
Megapixel2.jpg
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zermelo 7.22
Franco Grimoldi
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Ashraf AbuSara:
Could be fun. Here are a couple of crops from my a project I am currently working on.  This is a WIP. This is the native image scale at which the image was acquired. It was drizzled 2x for post processing and then downsampled back to the native resolution. So this image scale is the native image scale it was acquired at.

Impressive results for 1:1 scale!
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aabosarah 9.31
Ashraf AbuSara
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Franco Grimoldi:
Ashraf AbuSara:
Could be fun. Here are a couple of crops from my a project I am currently working on.  This is a WIP. This is the native image scale at which the image was acquired. It was drizzled 2x for post processing and then downsampled back to the native resolution. So this image scale is the native image scale it was acquired at.

Impressive results for 1:1 scale!

Thanks Frank! Could be a fun threat to see other takes.
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zermelo 7.22
Franco Grimoldi
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Alright, I'm very late to the party but... whatever!

I just finished doing 1-megapixel crops from my latest 8 images, 6 of which are yet to be published in AstroBin. In all cases, crops are at 1:1 native resolution, showing 4.6" per pixel, as the base resolution of my 135mm paired with the 2.9um pixels from the 585MC Pro camera.

To make the most out of the crops, I used the following aspect ratios, all within 1 megapixel:
. 16:9: 1333x750
. 3:2: 1225x816
. 4:3: 1154x866
. 5:4: 1118x894

Tarantula Nebula:
Tarantula_1MP.png
4h 30m - Dual narrowband

Vela SNR:
Vela_1MP.png
15h 20m - Dual narrowband

M42:
M42.png
2h 20m - UV/IR

Leo Triplet:
Leo Triplet 1MP_PS.png
2 hours - UV/IR

Horsehead and Flame:
BBHH_PS_1MP.png
4h 10m - UV/IR

Southern Pleiades:
Southern_Pleiades_90m_1MP.png
1h 30m - UV/IR

Witch Head:
Witch_1MP.png
6h - UV/IR

Chameleon Dark Clouds:
Chameleon_1MP.png
6h - UV/IR

I'm very pleasantly surprised with the results I'm getting shooting broadband OSC, much higher perceived resolution than dual-narrowband. This is very bad news: if I want the NB images to match the broadband ones, I'll need to  consider making the jump to mono imaging.

I hope you like the pics!
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jconenna 3.82
Joey Conenna
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sombrero_final.png
horsE.png
ghost.png
eagle5.png
Owl_final.png
Trifid_Done_2.png
Last one was resampled 2x.

I've always loved the detail my 10" f/4 gave me with 3.76um pixels. I am going to pair it with a QHY Minicam8 (IMX 585) soon, so 2.9um for a little more sampling (not that it would help), but for me I am actually interested in using the smaller sensor to force myself to take on more small objects. I did not like seeing the "wasted" space around small objects in an APS-C frame before, but now I won't have that luxury
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