|
Hi all,
A little update on my HDFS project. I have been in contact with a member of the HDFS team, getting some help on identifying the objects in the FOV. I was happy to hear he'd didn't know of any other amateur ever trying the HDFS and was impressed at what objects I managed to acquire.
While I still haven't managed to match up object for object to find exact magnitudes of the 30 objects I can clearly see, I do know that the 30 most bright objects in the FOV are rated at magnitudes between Mag 18.8 and Mag 22.5138. Of those 30 only 3 are brighter than Mag 20 and 7 are as faint or fainter than Mag 22.0884.
Interesting stuff!
Over the next few days I hope to accurately match object to object, achieving a match for what magnitude each object in my image is. He's given me the info to do it, I just need to do some database work to get the results I want.
Also interesting: To achieve Mag 23 I need another 16 objects. The faintest object in the HDFS is rated at Mag 33.5551.
Gez I love this faint fuzzy stuff, it's a good challenge.
The magnitudes quoted are on the AB magnitude scale, not the scale where the star Vega has mag=0. I'm yet to determine exactly what he means by that and hence what the actual difference is between these mag values and the mag values us amateur astronomers typically use.
Roger.
|