Author Topic: Help with narrowband pixels of the target are rejected  (Read 380 times)

Offline MAbr

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Help with narrowband pixels of the target are rejected
« on: 2019 September 06 23:21:03 »
Hi there,
Maybe anybody has an idea: I already got some nice narrowband results but in the last weeks I am having troubles.
when I am doing integration (whether I allow pixel rejection or not) my target (HII region and stars are rejected.
This leaves me with an extremely noisy result. Anybody ever encountered such a thing?
Please let me know if anybody has ever encountered something like this or is able to tell me what I am doing wrong?
Thanks in advance

Offline Geoff

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Re: Help with narrowband pixels of the target are rejected
« Reply #1 on: 2019 September 07 00:29:47 »
Have you tried STF after the integration?
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Offline MAbr

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Re: Help with narrowband pixels of the target are rejected
« Reply #2 on: 2019 September 07 03:00:19 »
Sure. But my problem is that the stretched picture is very noisy since the weight window, especially in drizzle integration, tells me that all the main stars and my nebula are not used.

Offline dave_galera

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Re: Help with narrowband pixels of the target are rejected
« Reply #3 on: 2019 September 07 04:43:15 »
Can you put up a data set so we can have a look at it
Dave

Offline dld

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Re: Help with narrowband pixels of the target are rejected
« Reply #4 on: 2019 September 07 04:59:29 »
Hello,
There is a slight chance that StarAlignment mistakenly picked hot pixels as stars. In that case the real stars will either average out or rejected by ImageIntegration. Use Blink to inspect your registered frames to see if you have badly aligned frames in your stack.

Offline MAbr

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Re: Help with narrowband pixels of the target are rejected
« Reply #5 on: 2019 September 08 04:44:41 »
I am adding some of the data here (I don't have the space for the whole set):

https://drive.google.com/drive/folders/1fvpBbw9Lcj3QpGEaI0qcs56Dz3fyS8jS?usp=sharing


It is not hot pixels and I got it to work in normal integration somehow but unfortunately, I am still not able to stack them in drizzle integration (see attachment).