VPHOT is an online photometry application for AAVSO members, and is seamlessly integrated with the iTelescope systems. If you choose to send your images to the VPHOT server they will automatically be calibrated and plate solved, and ready for photometric analysis in VPHOT online. Note that it might take 10-30 minutes before the images appear in VPHOT depending on network traffic, server load etc.
VPHOT can be enabled in the iTelescope Advanced Imaging Option. See Image below.
In order to use VPHOT you have to be an AAVSO member. You start by going to the AAVSO web site at http://www.aavso.org/ and log on to their web site with you AAVSO user name. Then you enter the VPHOT server via the link at the bottom of this page:
Before you can see your images in VPHOT you need to tell the system your iTelescope.Net user name so that it can correctly identify your images as they come in from the telescopes. To do this, you click the ‘Admin’ link in the top menu of VPHOT, and then click ‘Image Transfer (Connect Accounts)’. Follow the instructions on that page. You only have to do this once.
Each page in VPHOT has a help link that explains the details of that particular page. You can also view the excellent video tutorials below.
Note that some features has changed and new ones added since these videos were made, but the main features are the same.
These video tutorials have been produced by Ken Mogul.
- Introduction to VPHOT
- Available Images List
- Single Image Analysis
- Target Verification
- Changing the Centroid
- Reporting Data
- Time Series and Stacking
Please direct questions and comments to the VPHOT forum.