# \#isr **URL:** https://www.rubin.community/tag/isr/263.md [Latest](https://www.rubin.community/latest.md) · [Categories](https://www.rubin.community/categories.md) · [Tags](https://www.rubin.community/tags.md) --- ## [Overscan region trimming for obs package](https://www.rubin.community/t/overscan-region-trimming-for-obs-package/10843)
**Author:** [@dangause](https://www.rubin.community/u/dangause)\ **Replies:** 8\ **Last updated:** [August 21, 2025, 2:42pm UTC](https://www.rubin.community/t/overscan-region-trimming-for-obs-package/10843 "2025-08-21T14:42:08Z")
I’m in the process of debugging my obs package for the Nickel telescope and custom processCcd pipeline for the Nickel Telescope, and I’ve been running into a persistent issue where the overscan region isn’t trimmed in do… --- ## [How to make starflat from calibrated Auxtel images](https://www.rubin.community/t/how-to-make-starflat-from-calibrated-auxtel-images/7976)
**Author:** [@Rance](https://www.rubin.community/u/Rance)\ **Replies:** 4\ **Last updated:** [December 4, 2023, 2:17pm UTC](https://www.rubin.community/t/how-to-make-starflat-from-calibrated-auxtel-images/7976 "2023-12-04T14:17:30Z")
I would like to make a starflat from calibrated Auxtel data but I am finding the calibration part a bit confusing. Are there any nice tutorials or talks describing the calibration process in detail (from raw to final pro… --- ## [Cannot do fringe calibration for z-band DECam image processing](https://www.rubin.community/t/cannot-do-fringe-calibration-for-z-band-decam-image-processing/6470)
**Author:** [@stevenstetzler](https://www.rubin.community/u/stevenstetzler)\ **Replies:** 5\ **Last updated:** [April 15, 2022, 3:09am UTC](https://www.rubin.community/t/cannot-do-fringe-calibration-for-z-band-decam-image-processing/6470 "2022-04-15T03:09:19Z")
Hello. I am trying to process z-band images from DECam with the LSST pipelines. For the ISR step, the z- and Y-band images require fringe correction, however the pipelines fail to execute the ISR task on z-band images be… --- ## [Gen3 Instruments, registries, and ingestion](https://www.rubin.community/t/gen3-instruments-registries-and-ingestion/3946)
**Author:** [@parejkoj](https://www.rubin.community/u/parejkoj)\ **Replies:** 6\ **Last updated:** [November 28, 2019, 6:17pm UTC](https://www.rubin.community/t/gen3-instruments-registries-and-ingestion/3946 "2019-11-28T18:17:44Z")
These are notes from a discussion @timj and I had today about the gen3 Instrument class, how Instruments are registered with a Butler, and how to handle ingesting “instrument signature data” (brighter-fatter, defects, tr… --- ## [TransmissionCurves for HSC](https://www.rubin.community/t/transmissioncurves-for-hsc/2632)
**Author:** [@jbosch](https://www.rubin.community/u/jbosch)\ **Replies:** 3\ **Last updated:** [January 31, 2018, 12:16am UTC](https://www.rubin.community/t/transmissioncurves-for-hsc/2632 "2018-01-31T00:16:03Z")
With the merge of DM-13389, HSC’s ISR will by default load various transmission curve datasets from the input data repository, combine them, and attach them to the postISRCCD (and subsequently calexp, etc). For this to … --- ## [Y-band stray light correction for HSC](https://www.rubin.community/t/y-band-stray-light-correction-for-hsc/2517)
**Author:** [@price](https://www.rubin.community/u/price)\ **Replies:** 0\ **Last updated:** [December 19, 2017, 3:55am UTC](https://www.rubin.community/t/y-band-stray-light-correction-for-hsc/2517 "2017-12-19T03:55:16Z")
HSC has had some features known as “The Eye of Y” in the y-band images due to LEDs used in the instrument encoders. DM-12979 introduces some code to remove these features. Open-shutter darks were taken one cloudy night, …