I use nova.astrometry.net
mainly to test my astrophotography exposures and post-processing work. I want to find the faintest stars my sensor can pick up given the compromised observing conditions I usually work under. I also want to be sure that no high-ISO-generated noise pixels are being incorrectly identified as stars by the Photoshop filters I use prior to Astrometry.
When I have the results from Astrometry, my usual procedure is to open up my favorite stargazing app and compare the map to my image. But at any given time I can only look at one of those things, and I don't really have a way to look at them side-by-side. Moreover, stargazing apps generally don't let you rotate the display at will, so you can't orient the map image to in the same position as the photo.
One thing that would help would be if I could increase the number of stars that are labeled, or if I could indicate particular stars that I wanted to have labeled.
Even better would be a way to superimpose a grid for RA and declination, appropriate to the size of the image. Is there a way to do that?