Adventures with Sky Commander

I have used a Sky Commander digital setting circle computer with my telescopes since 1991. I can thank Tom Clark from Tectron Telescopes for turning me on to this wonderful gadget. I wouldn't be without it.

My first Sky Commander started out on a 20" Dob and later moved to a 14.5" Dob. I also added encoders to a 8" Dob so that I could use the Sky Commander with it. I have been running my Sky Commander on both the 14.5" and the 8" for years.

I recently got a new Sky Commander XP4 to use on the 14.5" so that I can permanently assign the older one to the 8". The configuration is a little different on the two scopes, so having one Sky Commander for each scope is helpful.

Old and new Sky Commanders

A feature was added to Deep-Sky Planner 6 that allowed users to upload an observing plan to the Sky Commander in its special objects list (entries 0-58). I have used this feature to upload coordinates for comets, asteroids and deep-sky objects that weren't in the Sky Commander database.

While testing Deep-Sky Planner with the new Sky Commander, I found that I still had to upload plans when the Sky Commander was at the Set Date prompt. That requirement never seemed right to me because I didn't see it documented anywhere.

I contacted Sky Engineering about this and we found that a firmware change would cure the problem. After some back and forth and some testing, a new firmware version emerged. I flashed the new firmware into the XP4 and the problem was solved!

Going forward, Deep-Sky Planner users with a Sky Commander having firmware prior to version 5.03 SP02 will need to upload plans when Sky Commander is at the Set Date prompt. Users that are able to update the firmware to version 5.03 SP02 or later should be able to upload plans to Sky Commander when it is at the Set Date prompt or in its normal operating mode. This is an added convenience that will make using Sky Commander with Deep-Sky Planner a little smoother.

I'd like to thank Victor McKeighan at Sky Engineering for his kind help in resolving this issue.

Mobile Astronomy

I continue to be amused at the capabilities emerging for mobile astronomy. While there are several mobile applications available to astronomers with smartphones and tablets, the combination I have at the moment is Deep-Sky Planner on Windows 7 plus either Sky Commander (digital setting circles) or SkySafari Plus (planetarium software) on an Android phone.

I have found that I can use the extensive planning features in Deep-Sky Planner to create observing lists that I can load into Sky Commander or my phone for use with SkySafari. I am working with a push-to telescope (no GoTo).

The Sky Commander option works well for finding asteroids and other objects that aren't in the Sky Commander database. This is actually my favorite option as I have worked in push-to mode for many years with the Sky Commander and printed charts. The greatest drawback with this method is that Sky Commander identifies custom objects with only a sequential ID number. I have to keep track of ID # 1 = asteroid Toutatis, for example. Users of Argo Navis get the text name which is most helpful. Deep-Sky Planner can format custom files for upload into Argo Navis; I just don't have one.

In my use, the SkySafari option is more or less a digital notepad that also shows the sky context in which the object may be found. It works quite well even though I am operating with a few limitations:

• I am using the intermediate version of SkySafari - not the pro version. The database is not as complete as I sometimes need. Should this become too great a limitation, I can upgrade to Pro.
• I am using SkySafari on a smartphone. The screen is small, although it is larger than many models (it's a Motorola phone with a 4.3" screen). I don't find that the size of the planetarium view on my phone is sufficient for every target. This may not be a problem at all for others.
• I do not use telescope control, so I rely on the coordinates given by SkySafari to use with my Sky Commander digital setting circles. I use the same technique when running Deep-Sky Planner on a laptop at the telescope.

Even with these limitations, I am able to take observing lists anywhere, anytime. It doesn't fit my needs for every observing session, but it's so darned handy! I can also log into the Deep-Sky Planner Plan Library and browse hundreds of plans with the browser on my phone. This is a terrific help when the plan prepared for the evening goes awry and a new one would serve better.

If you want to learn more about using a full-featured observing/imaging planner with SkySafari, please see this knowledgebase article on the Knightware website. It walks you through a complete example of using Deep-Sky Planner with SkySafari on an Android phone.

Search menu on SkySafari (Android) shows Custom Observing Lists

Custom list 'RASC Finest NGC Objects' uploaded from Deep-Sky Planner displayed in SkySafari (Android)