Raw Image -> Processed Image -> Combined Image
This is data taken through a clear filter shown at various
stages of processing. All images are shown with North up and West to the
right. they were displaiyed in SAO image with the colour scheme "cool"
then 'printed' to Black & White postcript files which I turned into
gifs in GIMP.
| Date d/m/y |
Original File Name | IRAF Task and Name | Parameters/Settings | Resulting File Name | Comments |
| 25/02/02 | arp273c1.fts and arp273c2.fts d600_1.fts and d600_2.fts fc1.fts to fc7.fts fdc1.fts to fdc7.fts |
Convert files to iraf files: rfits | --- | arp273c1.imh and arp273c2.imh d600_1.imh and d600_2.imh fc1.imh to fc7.imh fdc1.imh to fdc7.imh |
--- |
| arp273c1.fts | Convert files to iraf files: rfits | --- | arp273c1raw.imh | For posting of "Raw Images" page. (So I don't have to rename all the files when processing | |
| fc#.imh | Dark Subtracting: ccdproc | darkcorr=yes flatcorr=no dark=fdc#.imh |
Same as input | the # in the "dark" parameter file name corresponds to the # in the input file name. (this will be the case unless stated otherwise) | |
| arp273c#.imh | Dark Subtracting: ccdproc | darkcorr=yes flatcorr=no dark=d600_#.imh |
Same as input | --- | |
| fc1.imh to fc7.imh | Combine Flats: flatcombine | process=no combine=median ccdtype="" |
Flat.imh | Note: I shoud have set the parameter "reject=avsigclip" to "reject=none". dividing the one result by the other however shows very little variation (stdiv=2.26E-4) | |
| arp273c#.imh | Flatfield Image: ccdproc | darkcorr=no flatcorr=yes dark="" flat=Flat.imh |
Parp273c#.imh | --- | |
| Parp273c1.imh and Parp273c2.imh | Align images: imalign | reference=Parp273c2.imh ccords=refcoords |
Tarp273c#.imh | refcoords is simply the coordinates of bright stars listed in a text file. Parp273c2.imh was chosen as it was slightly better placed on the chip. | |
| Tarp273c#.imh | Combine Images: imcombine | combine=median reject=none |
Carp273c.imh | --- | |
| arp273b1.fts arp273b2.fts arp273b3.fts arp273b4.fts d600_1.fts d600_3.fts fb300_1.fts to fb300_3.fts fbd300_1.fts to fbd300_3.fts |
Convert files to iraf files: rfits | arp273b1.imh arp273b2.imh arp273b3.imh arp273b4.imh d600_1.imh d600_3.imh fb300_1.imh to fb300_3.imh fbd300_1.imh to fbd300_3.imh |
Didn't convert arp273b5.fts as the tracking had been bad | ||
| arp273b1.fts | Convert files to iraf files: rfits | --- | arp273b1raw.imh | For posting of "Raw Images" page. (So I don't have to rename all the files when processing | |
| fc300_#.imh | Dark Subtracting: ccdproc | darkcorr=yes flatcorr=no dark=fbd300_#.imh |
Same as input | --- | |
| fc300_1.imh to fc300_3.imh | Combine Flats: flatcombine | process=no combine=median ccdtype="" |
Flat.imh | Note: I shoud have set the parameter "reject=avsigclip" to
"reject=none". dividing the one result by the other however shows
very
little variation (stdiv=2.26E-4) Also all the files were in folders according to their night and so this Flat.imh was in a different folder than the other. |
|
| arp273b1.imh arp273b2.imh |
Dark Subtract and Flatfield Image: ccdproc | darkcorr=yes flatcorr=yes dark="d600_1.imh" flat=Flat.imh |
Same as input | the nearest dark is being subtracted from the object image (or 'light') | |
| arp273b3.imh arp273b4.imh |
Dark Subtract and Flatfield Image: ccdproc | darkcorr=yes flatcorr=yes dark="d600_3.imh" flat=Flat.imh |
Same as input | the nearest dark is being subtracted from the object image (or 'light') | |
| arp273b#.imh | Align images: imalign | reference=arp273b2.imh ccords=refcoords |
Tarp273b#.imh | the image arp273b2.imh was chosen as a reference image bacuse it was better placed on the chip. | |
| arp273b1.imh to arp273b4.imh | Combine Images: imcombine | combine=median reject=none |
Carp273b.imh | --- | |
| 12/03/02 | arp273r1.fts arp273r2.fts d600r1.fts d600r2.fts fr1.fts to fr5.fts fdr1.fts to fdr3.imh |
Convert files to iraf files: rfits | --- | arp273r1.imh arp273r2.imh d600r1.imh d600r2.imh fr1.imh to fr5.imh fdr1.imh to fdr3.imh |
--- |
| arp273r1.imh | Convert files to iraf files: rfits | --- | arp273r1raw.imh | For posting on "Raw Images" page. (So I don't have to rename all the files when processing | |
| fr1.imh and fr2.imh | Dark Subtracting: ccdproc | darkcorr=yes flatcorr=no dark=fdr1.imh |
Same as imput | --- | |
| fr3.imh and fr4.imh | Dark Subtracting: ccdproc | darkcorr=yes flatcorr=no dark=fdr2.imh |
Same as imput | --- | |
| >fr5.imh | Dark Subtracting: ccdproc | darkcorr=yes flatcorr=no dark=fdr3.imh |
Same as imput | --- | |
| fc1.imh to fc5.imh | Combine Flats: flatcombine | process=no combine=median ccdtype="" |
Flat.imh | --- | |
| arp273r#.imh | Dark Subtract and Flatfield Image: ccdproc | darkcorr=yes flatcorr=yes dark="d600r#.imh" flat=Flat.imh |
Same as imput | the nearest dark is being subtracted from the object image (or 'light') | |
| arp273r#.imh | Align images: imalign | reference=arp273r2.imh ccords=refcoords |
Tarp273r#.imh | the image arp273b2.imh was chosen as a reference image bacuse it was better placed on the chip. | |
| arp273r1.imh and arp273r2.imh | Combine Images: imcombine | combine=median reject=none |
Carp273r.imh | --- | |
| For photometry logs see the photometry page |