Originally reported by: pohuigin (Bitbucket: pohuigin, GitHub: pohuigin)
If I already added this issue, then please combine this one with it.
At the request of the AIA science team, the HMI continuum full disk images should be added to solarmonitor. If available, HMI continuum should be displayed. however, if only AIA 4500 is available, then display AIA instead.
See Mark Cheung's email:
To our fellow colleagues at SolarMonitor.org,
On behalf of the AIA science team, I would like to recommend that the SolarMonitor main tab show continuum images from HMI instead of 4500 from AIA. There are a number of reasons for this:
HMI has higher spatial resolution and cadence than AIA 4500,
HMI has better optical characteristics in the visible, and
The AIA 4500 image has an artifact (in the shape of an arc in the northeast quadrant) which is possibly due to a pinhole in the front entrance filter of one of the telescopes. This does not affect EUV images since they have a focal plane filter to block out visible light. The artifact in 4500 started to appear more than a year ago and is slowly becoming more prominent. At this point it is a bit distracting for users.
After speaking with Paul Higgins, I understand that you need a mechanism to pull the latest continuum images from HMI if you were to make this change. This can be done with this simple command in SSW
This will return urls (stored in the data variable) for HMI continuum images from the last two hours. If you want to directly grab the images, you can also omit /url. Then the continuum images will be loaded into the data variable. Changing the argument for ds will also let you choose to download other types of HMI and AIA data. More information can be found at http://www.lmsal.com/sdouserguide.html .
Please tell me what you think of this idea and please ask if you would like some assistance with the SSW commands.
dpshelio
commented
10 years ago
Originally reported by: pohuigin (Bitbucket: pohuigin, GitHub: pohuigin)
If I already added this issue, then please combine this one with it.
At the request of the AIA science team, the HMI continuum full disk images should be added to solarmonitor. If available, HMI continuum should be displayed. however, if only AIA 4500 is available, then display AIA instead. See Mark Cheung's email:
To our fellow colleagues at SolarMonitor.org,
On behalf of the AIA science team, I would like to recommend that the SolarMonitor main tab show continuum images from HMI instead of 4500 from AIA. There are a number of reasons for this:
After speaking with Paul Higgins, I understand that you need a mechanism to pull the latest continuum images from HMI if you were to make this change. This can be done with this simple command in SSW
ssw_jsoc_time2data, anytim(systim(/utc))-7200., anytim(systim(/utc)), index, data, ds='hmi.Ic_noLimbDark_720s_nrt', /url
This will return urls (stored in the data variable) for HMI continuum images from the last two hours. If you want to directly grab the images, you can also omit /url. Then the continuum images will be loaded into the data variable. Changing the argument for ds will also let you choose to download other types of HMI and AIA data. More information can be found at http://www.lmsal.com/sdouserguide.html .
Please tell me what you think of this idea and please ask if you would like some assistance with the SSW commands.
Best, Mark Cheung