“This is a shot of the AF3 focuser for the William Optics Redcat 51 from Deep Sky Dad. This thing performed BEAUTIFULLY on my first night out. Big improvement over trying to manually focus that scope with the Bahtinov mask.

I was getting picture perfect V-curves from SGP and my first image with it came out well ( The installation was easy (20 mins) and the manufacturer provided the SGP setup on his website. Couldn't be happier!

I have no affiliation with this product or the company. I was just very happy with the product and I wanted to share my impressions with the Astrobin community.”

Anders Misfeldt

“On the 2nd of December the weather was great again, so I decided to try out M33 with my now pretty automated setup (so nice to sit inside watching a movie while the RP4 just controls all :))

The end result was pretty great IMHO. Your AF3 did an outstanding job of keeping the focus throughout the imaging session. It's a truly amazing piece of hardware you've developed for a very reasonable price. I can only give it my highest recommendations.”

“Multiple autofocusing solutiuons by Deep Sky Dad! Highly recommended.”

“An awesome piece of gear made by an astrophotographer for astrophotographers. Fully ASCOM ready and custom 3D printed mounting platform”

“New autofocuser from on my new TS 60 APO. Perfect fit, all i need is a #clearsky.”

“Deepskydad ascom motofocus made by my friend It’s an overkill unit for the price and works flawlessly even in low temperatures.”

“This product is 100% plug-and-play. I copied the suggested settings in SGP and on the very first test run I achieved perfect focus (confirmed with a bahtinov mask). Pavle also worked with me to custom design a mounting plate that seamlessly fit upon arrival. It really is an astrophotographer's dream!”

“Fantastic, simple to use design, plug and play. Customer support is excellent with regular updates on the build of your custom unit.”

“I was able to collect approximately 40 hrs of exposures and still got enough sleep. I recommended your focuser on local astronomy forum.”

“The APT autofocus routine worked very well straight away and achieved a perfect enough focus on the Pleiades to reveal my slightly twisted spider vane (to be replaced!). All in all the autofocuser worked very well and took about 20 minutes to mount and install.”

“Amazing piece of gear that has seen me leave my rig out all night capturing data while I happily sleep away! I was able to get it working flawlessly with my gear achieving hands off perfect focus.”

“I used AF1 "in the field" first time last weekend. It worked wery well. I tried focus with Bahtinov mask first, took a few photos and after that ran the APT autofocus procedure. The focusing was much more precise. The coma in the corners of pictures was completely lost. Thank you for a great accessories.”

“I gave my AF1 its first field test last night, and it worked great! It certainly helped that my focuser was all cleaned and adjusted, but I found that the AF1 did an excellent job with it. I had it autofocusing with SGP, and it worked just fine. There was no evidence of slipping or missed steps, and it autofocused perfectly compared to my Bahtinov on several targets.”

Software development


Development of full stack websites, specializing in intranet business applications as my daytime job.


Control software for various astronomy products.


I specialize in implementation of ASCOM drivers, making the hardware accessible to the masses.

+ Years of astrophotography
+ Photographs taken
+ Hours of exposure