![]() The resulting Markdown you write is then fed in to a converter that replaces the Markdown syntax with HTML, which can then be displayed on a web page. Markdown, like HTML, allows you to specify text formatting, but it is far less expressive than HTML, which is perfectly fine since it is only meant to format text and not create full web pages. Markdown is a very lightweight markup language that lets you create rich text (meaning text that has emphasis, headers, etc) in any plain text editor. In this article I'll explain what it is, and more importantly, I'll show you some Markdown examples that you can use on your own. If you're a blogger, there really isn't any reason to have to write HTML as you probably only need simple formatting like emphasis and links. Sure, for many developers it might be easy, but it definitely isn't convenient thanks to the verbose syntax. You should now be ready to use the ccdred package programs to bias subtract and flat field all of the WIRO images.As we all know, HTML has been around a long time and is used to build every website on the internet, but it's really not that easy to write. Use ccdhedit to edit all of the files for each filter.The file contains the namesĮnter the desired filter ('u', 'g', 'r', 'i' or 'z'): u The program will create a file with the name filtefilterlist_x Use python program MakeFilterList.py to make a list of files for each of the desired filters.Use IRAF's hselect command to generate a file containing filesĮcl> hselect $I,filter yes > filefilterlist.Now we use ccdhedit to add the appropriate imagetyp header keyword to each image. You should also display the images and eliminate any saturated or bad images from your bias and flat lists. After you've created these lists just edit them with atom to remove the files that aren't of the desired type. I think the easiest way to do this is just make three copies of the filelist called biaslist, flatlist, and objectlist. One list with only the bias image file names, one with the flat image file names and one with the object file names. The WIRO data images don't have the imagetyp header keyword set so we'll have edit the all the FITS files to add that keywork in order to process the images with ccdred. These are the files you will use for the rest of the processing. Note that on our systems the processed files will have the extension. The processed files will have the same root name as the originals, but with an _z. The WDPzero("filelist") command will take some time to execute. Overscan zero subtraction script for WIRO Double Prime imager Now start iraf, go to the directory with your files, and follow instruction on the website to define the task and run WDPzero. You can do this with the UNIX ls command. Put the script in the directory with the images you wish to process. (review = yes) Review instrument parameters?ĭownload the latest WDPzero.cl script from the WIRO website. (directory = "ccddb$") Instrument directory Query = "DoublePrime" Instrument ID (type q to quit) Instrument = "DoublePrime" Instrument ID (type ? for a list) When you are finished the setinstrument parameters should be set as shown below. Then run setinstrument and choose DoublePrime as the instrument. Set stdimage = imt4096 Use setinstrument to setup ccdredįirst use epar to edit the setinstrument site parameter to wiro. Do this by finding the set stimage command in the file, and change it to read: Use atom to edit your login.cl so that ds9 will display the entire 4096 by 4096 image. Correct the filter keyword in the FITS file headersīelow I've included a short description of each one of these steps along with an example processing session where appropriate.Set the imagetyp of each image to zero, flat, or object.Run WDPzero.cl on all images to correct the overscan region.Use setinstrument with observatory wiro, and chose instrument DoublePrime.Edit your login.cl to set stdimage = imt4096.Here are some of the things you need to do before using the ccdred programs to bias subtract and flatfield the WIRO data. Markdown Plus exported HTML Working with WIRO data
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