1d skysb: model fit approach (PIPE2D-302)

[PIPE2D-455] Fit multigaussian to cauchian Created: 19/Sep/19  Updated: 19/Sep/19

Status: Open
Project: DRP 2-D Pipeline
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Sub-task Priority: Normal
Reporter: sogo.mineo Assignee: sogo.mineo
Resolution: Unresolved Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Blocks
blocks PIPE2D-302 1d skysb: model fit approach Open
Sprint: 2DDRP-2019 J, 2DDRP-2019 K

 Description   

The Cauchian is O(λ⁻²) and it will possibly serve as such a component of the LSF model that will fit the skirts of the LSF. The problem of the Cauchian is that it is not easy to blur it with the Gaussian.

One solution to this problem is to approximate the Cauchian by a linear combination of many Gaussians. Having payed years of CPU time, approximation of a few 10⁻⁷ L² distance has been achieved with a combination of 25 Gaussians. The best approximation is still being updated.


Generated at Sat Feb 10 15:53:24 JST 2024 using Jira 8.3.4#803005-sha1:1f96e09b3c60279a408a2ae47be3c745f571388b.