[fitswcs] SIP scheme

[David Shupe]

Doug Mink wrote:

> Richard Hook wrote:
> 
>> As some of you may be aware the Spitzer Science Center (SSC) has 
>> adopted the "SIP" scheme for the representation of non-linear 
>> geometric distortion in their FITS image products 
>> (http://ssc.spitzer.caltech.edu/documents/ distortion_v1.4.pdf).  This 
>> is inspired by, and based on, preliminary Paper IV FITS work, but is 
>> distinct from it.
>> ...
>> I have been discussing this with David Shupe, who is lead author of 
>> the above memo, and we are planning to hold a brief discussion of this 
>> work at the forthcoming FITS BoF at ADASS in Pasadena at the end of 
>> October. 
> 
> I think the SIP distortion scheme would be a good topic for
> an ADASS poster.  A brief presentation on it at the FITS BoF,
> with some examples, would be a good illustration to the FITS
> world of what a distortion model can do for real world data.
> 
> -Doug Mink (whose implementation of SIP is in WCSTools, SAOimage, and ds9)

Dear Doug,

We followed your excellent suggestion, and submitted a late
abstract on the SIP distortion convention to ADASS XIV.  I've
asked that it be scheduled before the FITS BoF if it is possible.
We still plan on holding a brief discussion at the BoF too.

Regards,
David Shupe
Spitzer Science Center, Caltech