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How To Create a Mosaic | Hyperion Astronomy

How To Create a Mosaic


Sometimes our equipment's field of of view just does not quite match the target we are trying to image. And some other times, the target is just too big :-) like M31, M42 and the running-man nebula, the heart and soul nebulae, etc..but there is a solution in PRISM for that too, naturally :-D

PRISM allows us the possibility to create a multi-panel mosaic to fit any target in a set of images that we can assemble ourselves. It even allows us to put these images together and form one main beautiful master frame. To get started, follow these simple steps:

Step 1: Set Up Your Field Of View

You can set up all this information easily in PRISM as follows:

  • Open the skychart settings window
  • Click on the "CCD/Telescope" Tab
  • Check the box titled "Activate CCD field display"
  • Select your camera from the dropdown menu
  • IMPORTANT: you must input your telescope's focal length correctly. You can grab an image taken with the same telescope configuration and plate solve it OR use the manufactorer's specification as a start.

Press the gear icon to open the settings window

Establish you camera settings

Step 2: Open The Mosaic Tool

Click on Observatory > Object List and a new tool opens up. Now click on File > Mosaic tool as shown below:

Observatory Menu

Object List Tool

Step 3: Set up The Mosaic

Now it is time to choose our target and experiment with how to image it, what orientation, how many tiles, etc..

  • IMPORTANT: Your camera must be connected for PRISM to retrieve its information
  • Enter a target's name and press "Go" and PRISM will find its coordinates from the skychart
  • Choose " By CCD fields"
  • Once satisfied, press "OK" at the bottom

Step 4: Display The Mosaic On The Skychart 

After you have set up your imaging, it is time to display it on the skychart to see about, fit, placement, orientation etc..

Final Result

Step 5. Let's Image Now

PRISM in a true one-stop-shop software that allows you to plan, acquire and process. Head over to Observatory > Automatic Observation and click on "Import Object List [OBJL]. PRISM will import all the tiles and what is left to do it head over to the "Execute tab" and press "Go". It is that easy. This press will take you 5 minutes to go through.

Video Tutorial

Fullscreen for better viewing :-D

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Jim McKay - April 8, 2019

Thanks for publishing these very helpful tutorials.


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★ Reviews

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18 reviews
Imaging Made Easy

Prism is my GoTo program for observatory control and imaging. Prism's many features make imaging taking a breeze.

I was concerned about giving Prism a try , especially as its quite expensive. So far Im very impressed and glad of my decision.
Im a beginner at all this so haven't tried other more recommended software, Prism appealed as it seems to do everything instead of using several programs 👍🏻

Great lightweight guide scope

This guide scope replaces a 400/80 that was waaay too heavy for what it did. The smaller 60mm scope does a great job guiding and I can RA balance with just one counter weight now - much better - and it looks like something Ferrari designed

Still learning Prism using Wireless links...

I have much of your software working at this time... I have it parked on my main computer, and a notebook... My main computer is a OverClock computer with 32 Gigs of RAM Clocking presently at 4400MHz with software parked on SSD drives... The rotation dome by NexDome is still not working... Most problems like this have to do with ASCOM Drivers... There is not very much detail information on how to use this software... I have to feel my way to a total operational staus... Second issue... The rain in the San Francisco Bay Area this year has limited my access to my larger telescope (12 inch SCT)... This rain has been so significant, I was force to weatherize my observatory... My goal here is,,, I am trying to remotely control my observatory totally. I have used Netgear Powerline 2000 to handle camera images and discover controlling rules to do that... High speed is vital for images with cameras over 3 Megs... I have both 12 Mega sensors and 24 Mega sensors... I am also using Netgear Nighthawk router and its mating extender to increase control signals to my observatory that is about 100 feet on the side of hill... I am also using Virtual Here software on a Raspberry Pi inside the observatory to solve the USB interface requirements... I started out using Model B and B+ on level 3 raspberry Pi's... I have moved to Level 4 Raspberry Pi to gain access to USB 3.0 technology... Big difference! I hope by early spring to have everything working... Bob Ritter MicTechS

A great program, even for beginners!

I have to admit, I was hesitant to invest in an “all in one” astrophotography program. Being a beginner, I thought the learning curve would be way too steep, but after talking with several friends I decided to give it a try. The first thing I noticed was the logical layout of the main screen. It was very intuitive and easy to navigate. Everything you could need for astrophotography is in this program! Setup of my equipment was quick and easy with no glitches or errors. Everything runs smoothly from capture to the final process. You will surely have questions and this brings me to the next point. Prism’s customer service is second to none! With on line tutorials, a Facebook group and email you will have instant access to knowledgeable users worldwide. My first question was answered directly by the US distributor within a matter of minuets! Take the next step and invest in your future in astrophotography! You’ll never look back!

Greg Hemmings