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Messages - frajanssen

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1
General / Re: Basic Question on Calibrating Darks and Flats
« on: 2019 June 12 12:51:57 »
Bernd,

Thanks for the comment. In the following days I will test.

François

2
General / Re: Basic Question on Calibrating Darks and Flats
« on: 2019 June 12 03:25:00 »
Hi Bernd,
Thanks for the answer. Yes, it cost time and hard disk space.
Perhaps a simple answer: how can I test for clipping?

François

3
General / Re: Basic Question on Calibrating Darks and Flats
« on: 2019 June 12 01:03:00 »
Hello,

Whenever there is information about the calibration process, I get confused.

Let's say I have the following collection: Lights, Darks (the same exposure time as the lights), Bias, Flats and Dark flats (the same exposure time as the Flats). All at the same temperature.
This is what I do:

1. Integrating of the Bias files to a Master Bias.
2. Calibration of the Darks with the Master Bias.
3. Integrating of the calibrated Darks to a Masterdark.
4. Calibration of the Dark Flats with the Master Bias.
5. Integrating of the calibrated Dark Flats to a MasterDarkFlat.
6. Calibration of the Flats with the Master Bias and the MasterDarkFlat.
7. Integrating of the calibrated Flats to a Master Flat.
8. Calibration of the Lights with the Master Bias, the MasterDark and the Master Flat.

I can do this with or without Batchpreprocessing, with or without optimization.
Is this the right way?

François Janssen

4
General / Re: DrizzleIntegration process takes more than 3 hours
« on: 2017 November 02 02:42:32 »
I have two hard drives: 1 TB HDD and an SSD 250 GB.  And RAM: 16 GB

I have made a RAMDisk or 8 GB (tests with Benchmarks: this was the best choise).

Now it works faster, but DrizzleIntegration takes up too much time.

Thanks everyone for the information.

Fra

5
General / Re: DrizzleIntegration process takes more than 3 hours
« on: 2017 October 25 08:33:21 »
Mike,

I have a Samsung SSD750 EVO 250 GB. I Suppose this means 250GB.
About RAM: it is indeed 16GB (sorry!). The RAMDisk is 254 MB.
I have 500GB free space on the hard disk.


Fra

6
General / Re: DrizzleIntegration process takes more than 3 hours
« on: 2017 October 25 06:02:57 »
Thanks for the reaction.

Intel Core i5-6500
SSD: 232 GB
RAM: 254 MB
Space left on hard disk: 500 GB
Swap disk: no
External hard drive: not in use

Fra

7
General / DrizzleIntegration process takes more than 3 hours
« on: 2017 October 24 08:51:20 »
I have 36 luminance files (each 64 MB).
I did a CosmCorr on the calibrated files.
Then a StarAlignment (with Generate drizzle data).
Then I used LocalNormalization (with Generate Normalization data).
Then Image Integration (with the L.Norm. and Drizzle Files).
Then I did a DrizzleIntegration (with the L.Norm. Files).

This DrizzleINtegration process take more than 3 hours.
What am I doing wrong (or is this normal?).

frajanssen

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