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Opened 21 years ago

Closed 21 years ago

Last modified 20 years ago

#592 closed defect (fixed)

psProject / psDeproject invert plate scale

Reported by: eugene Owned by: David.Robbins@…
Priority: high Milestone:
Component: astro Version: 0.8.0
Severity: normal Keywords:
Cc: robert.desonia@…

Description

though not well-defined in the docs, 'plate scale' means (angular scale /
pixel). For psProject and psDeproject, this should be radians / pixel. these
functions are implemented as pixels / angular scale. ie, these lines in
psDeproject:

Remove plate scales
psF64 x = coord->x/projection->Xs;
psF64 y = coord->y/projection->Ys;

should read

Remove plate scales
psF64 x = coord->x*projection->Xs;
psF64 y = coord->y*projection->Ys;

I've updated the SDRS to clarify

Change History (7)

comment:1 by robert.desonia@…, 21 years ago

Owner: changed from robert.desonia@… to David.Robbins@…

comment:2 by robert.desonia@…, 21 years ago

dependson: → 593

Dave, Bug #593 is very much related to this. Check it out before moving ahead on this.

comment:3 by robert.desonia@…, 21 years ago

blocked: → 593
dependson: 593

comment:4 by robert.desonia@…, 21 years ago

Cc: robert.desonia@… added

comment:5 by David.Robbins@…, 21 years ago

Resolution: → fixed
Status: new → closed

done

comment:6 by Paul Price, 20 years ago

Keywords: VERIFIED added

Bug has been resolved.... closing.

comment:7 by Paul Price, 20 years ago

Keywords: VERIFIED removed

Bugs have been fixed... closing.

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