To Seestar App developers: Please add angular sizes (in degrees, arcminutes, and/or arcseconds) to object descriptions. Without this information, one cannot know whether an object is suitable for the Seestar S50.
For example, the Cat's Eye Nebula (NGC 6543) is listed in the Seestar SkyAtlas, but its angular size (20 arcseconds) is not. The Seestar sensor scale is 2.4 arcseconds per pixel, meaning that the Cat's Eye Nebula would be only 8 pixels wide on this sensor. Could you image the Cat's Eye through the Seestar? Probably. Would the image be more than a tiny blurry dot? No.
On the large end of the scale, the Carina/Keyhole Nebula (NGC 3372) is listed in the Seestar SkyAtlas, but its angular size (120 arcminutes x 120 arcminutes) is not. The Seestar field of view is 44 arcminutes x 77 arcminutes, so imaging the entire Carina nebula through the Seestar would require six images in a 3 x 2 mosaic. That's a lot of work.
Should the Cat's Eye Nebula and the Carina Nebula be stricken from the Seestar SkyAtlas? No, because an astrophotographer might want to try to image the Cat's Eye despite its smallness, or image just a portion of the Carina Nebula, or do a mosaic of its entirety.
Should the angular sizes of these (and all other) objects be included in the object descriptions in the Seestar SkyAtlas? Yes, so that astrophotographers are informed about how much or how little of an object that they will be able to see in the Seestar field of view.
P. S. Please list object magnitudes in the Seestar SkyAtlas object descriptions for similar reasons.
P. S. S. Please add the Barnard catalog of dark nebulae to your catalogs (Messier, IC, NGC, SH2, Named Star). These dark nebulae are fascinating, and many of them (B 68, B 72, B 142, and B 143, for examples) should be observable through the Seestar S50.
P. S. S. S. Please allow a user to specify the right ascension and declination of an object that does not happen to be listed in one of the catalogs, and please allow users to move the telescope to that location. Or, at least, please show the right ascension and declination of the place where the telescope is currently pointing so that a user can manually slew to a desired place in the sky, starting, perhaps, from a nearby object that is listed in one of the catalogs.
P. S. S. S. S. Please implement mosaic mode, that is, a way to shoot images of different parts of an extended celestial object and stitch them together.
P. S. S. S. S. S. Please accept my gratitude for the SeeStar app, an amazing piece of software. The object descriptions are beautifully written and the photos are lovely. The visibility graphs of altitude vs. time are incredibly useful for planning a night's observing. I was going to suggest that compass directions (N, NE, E, etc.) be added to these graphs to help astrophotographers in placing their telescopes in order to avoid earthbound obstacles (buildings, trees, etc.). This morning I discovered that compass directions are already shown, in the upper right corner! The ability to move the cursor around to see the compass direction and the altitude at different times of night is super useful! Thanks so much for the leadership role that ZWO is playing in the astrophotography hardware and software revolution. It's a great time to be alive! Bravo, bravo, bravo!
