Is Stacking RAW Images the Key to High-Quality Astrophotography?

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Discussion Overview

The discussion revolves around the practice of stacking RAW images in astrophotography and its impact on image quality, particularly in relation to high ISO settings. Participants share their experiences and technical details regarding their astrophotography setups.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant shares a cropped image taken with specific settings, noting the use of a high ISO and multiple frames.
  • Another participant comments on the quality of the image at ISO 2000, suggesting that such settings typically result in grainy images.
  • A participant mentions using a Losmandy GM-8 mount and claims that stacking RAW images allows for higher ISO settings without compromising image quality.
  • Another participant agrees with the claim about stacking RAW images improving image quality, expressing enthusiasm about the results.

Areas of Agreement / Disagreement

There is a general agreement among participants that stacking RAW images can enhance image quality, particularly at higher ISO settings. However, the discussion does not resolve whether this practice is universally applicable or the best approach for all astrophotography scenarios.

Contextual Notes

Participants do not provide detailed explanations of the technical processes involved in stacking images or the specific conditions under which their claims hold true, leaving some assumptions and dependencies unaddressed.

Who May Find This Useful

Astrophotographers, photography enthusiasts, and individuals interested in image processing techniques may find this discussion relevant.

Andy Resnick
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Virgo has moved on, Hercules is now in position- from last night:

43m.TIF%20RGB_zpsufchx1d5.jpg


This is a downsized crop. Technical deets: 800/5.6, 10s ISO 2000, 204 frames.
 
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Very nice for ISO 2000. Shots at that speed are usually rather grainy.What mount you using?
 
Thanks! My lens mount is a Losmandy GM-8. I've found that stacking RAW images (as opposed to JPGs) let's me use higher ISO settings.
 
Andy Resnick said:
I've found that stacking RAW images (as opposed to JPGs) let's me use higher ISO settings.

yes it does and you end up with a much better quality image :smile:D
 

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