Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's nebulae  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034
M81 and M82 at 135 mm, Ben
M81 and M82 at 135 mm
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M81 and M82 at 135 mm

M81 and M82 at 135 mm, Ben
M81 and M82 at 135 mm
Powered byPixInsight

M81 and M82 at 135 mm

Equipment

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Acquisition details

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Description

I got a Lithum battery to power all my setup. This picture is my first one away from the backyard with AZ-GTi and ASI183MM.

Shot at f/2.8.

I had some guiding problems : the stars are a bit like potatoes.

I did drizzle x2 (I tried drizzle x3 but there were artifacts), deconvolution of synthetic luminance.

I am not really satisfied with the colors.

Overall expoure time is not very long but my primary goal was to test the battery in real conditions.

Some days later I shot 2h30 of luminance (UV-IR cut). I did LRGB processing with these RGB shots but at the end the image shows less details... With my Samyang LRGB can not beat RGB in terms of resolution.

Revision B shows the size of M81 and M82 in the ASI183 frame :-)

Comments

Revisions

  • Final
    M81 and M82 at 135 mm, Ben
    Original
  • M81 and M82 at 135 mm, Ben
    B

B

Description: Framing

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M81 and M82 at 135 mm, Ben

In these public groups

Samyang 135 f/2
ZWO ASI183/QHY183