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M8C4 shows fingerprint issue in middle of camera #36

Open RuslanKonno opened 1 week ago

RuslanKonno commented 1 week ago

M8C4 images show a fingerprint-like defect in the middle of the camera, similar to https://github.com/blumzi/LAST_issues/issues/31#issue-2128995712

I see it in the corner of the central sub-frame coadds (09, 10, 15, 16), such as

LAST.01.08.04/2024/03/04/proc/195542v0/LAST.01.08.04_20240304.195532.853_clear_1270_000_001_009_sci_coadd_Image_1.fits

Screenshot from 2024-06-16 14-38-49

Presumably you'll see it in the center of the raw images, at the moment last08w down though so I can't look for an example. The problem is present in 2024 March to 2024 June data so far.

EranOfek commented 1 week ago

Is this seen only in the first few images of the night? or in all images?

On Sun, Jun 16, 2024 at 2:46 PM RuslanKonno @.***> wrote:

M8C4 images show a fingerprint-like defect in the middle of the camera, similar to #31 (comment) https://github.com/blumzi/LAST_issues/issues/31#issue-2128995712

I see it in the corner of the central sub-frame coadds (09, 10, 15, 16), such as

LAST.01.08.04/2024/03/04/proc/195542v0/LAST.01.08.04_20240304.195532.853_clear_1270_000_001_009_sci_coadd_Image_1.fits

Screenshot.from.2024-06-16.14-38-49.png (view on web) https://github.com/blumzi/LAST_issues/assets/51087294/fa499dde-85e0-48d2-be21-312dbf6cf7c0

Presumably you'll see it in the center of the raw images, at the moment last08w down though so I can't look for an example. The problem is present in 2024 March to 2024 June data so far.

— Reply to this email directly, view it on GitHub https://github.com/blumzi/LAST_issues/issues/36, or unsubscribe https://github.com/notifications/unsubscribe-auth/ABJUQ4P2NERV765273FNXVLZHV3IDAVCNFSM6AAAAABJMQ4VFSVHI2DSMVQWIX3LMV43ASLTON2WKOZSGM2TKNZQGI4TINA . You are receiving this because you are subscribed to this thread.Message ID: @.***>

RuslanKonno commented 1 week ago

I've looked at a few random March nights, including the first (2024-03-03) and last (2024-03-12) nights. The defect is present at the beginning as well as the end of every night (17 UTC - 03 UTC) I looked at.

Each June image that I looked at so far also has this issue, but not all of the M8 data seems to have been copied over to marvin, so while last08w is down I can't verify if it persists throughout the night in the June data.

So far it looks generally persistent.

EastEriq commented 1 week ago

8w resurrected so that you don't have excuses