PHOTOS
The Virgo cluster Challenge - May 2023
- Which object do I need to observe: For Stellina owners: M60 - What picture format do I need to send? We will need to receive the TIFF format. Please do not edit your image and do not add text to it. Here is a tutorial on how to save the Tiff format ...
What file size can Stellina create?
Stellina can create the following file size: - JPEG: up to 4-5 Mb in full resolution - Fits: 12 Mb - Tiff: up to 36 Mb in full resolution To check your Stellina is in full resolution: 1. Go to your profile tab & click on the 3 dots 2. Click on ...
Can STELLINA track satellites or ISS?
This feature is currently under study.
Does STELLINA integrate dark, flat and offset files?
Flat would be complicated to manage because of the field derotator The bias (offset) is not necessarily necessary on recent sensors (more so than on our cameras, we found that it was impossible to control the behavior of the sensor below 0.5s) The ...
Where are your STELLINA pictures stored?
There are 3 ways to store your pictures taken with Stellina: On your Singularity app On your device (Smartphone or tablet) On a USB stick
What can I photograph with STELLINA?
STELLINA is what can be called a “large field” astrograph (astrophoto camera) because its field is about 1° x 0.7°. To get a better idea, the Sun and the Moon represent a field of about 0.5°, so they perfectly fill the sensor’s field. STELLINA is ...
Can I retrieve the raw images and process them myself?
Yes, just plug a USB key into the STELLINA compartment before the start of your observation to retrieve the files in the following format: The final photos processed by STELLINA are available in jpg format. Raw images are available in fits format ...
How can I retrieve my pictures in raw format?
Before you start your observation, open the battery compartment and plug a USB key into one of the two USB-A ports available. This will allow you to retrieve the final and raw images captured by Stellina. On your instrument page, make sure to select ...
Why do planets appear so small?
Stellina is a telescope mainly adapted to deep sky objects: galaxies, clusters, nebulae… The telescope has a focal length of 400mm, which is too small to make the observation of planets interesting. Unfortunately, there is currently no material to ...
Why do the sky backgrounds of my pictures vary so much between the types of objects?
Our proprietary image processing algorithm applies different parameters for each object (colorimetry, saturation, histogram …). That’s why you can see rendering differences between your photos of clusters, nebulae or galaxies. The quality of the ...
How does the focus work with STELLINA?
The focus is (currently) done during STELLINA’s initialization: when the arm is unfolded and after the first field recognition, the focus will be done until it finds the position at which the stars are the finest. It is made possible thanks to our ...
Why do my FITS files appear in black and white?
The FITS files come from a color sensor containing the information organized as a Bayer pattern. To convert them to a colored image, it is necessary to go through a phase called demosaicing (sometimes called Debayering). A single FITS file is not ...
I can't open my raw files in Photoshop
The raw files created by STELLINA are delivered in FITS and TIFF formats. These formats are specific to astrophotography and need to be processed in a specific way that only experienced amateur astronomers will know how to perform. If you do not have ...
What software do you recommend to edit the raw files?
You can edit the raw files delivered by STELLINA with software such as: – PixInsight (stacking & processing) – Siril (stacking & processing) – DeepSkyStacker (stacking) We encourage you to browse the different topics available online and to follow ...
Why does the exported TIFF photo appear in black?
The TIFF image appears black as the palette of shades the computer screen has is way more limited than that of the TIFF image (256 levels per color on the computer screen versus 65536 levels per color in the TIFF file). To reveal the contrasts, it is ...
What are the image formats available?
Today, 3 image formats are available with STELLINA: JPEG, TIFF, and FITS. These formats are really different from one to another. If you would like to know the strengths and weaknesses from each and how to extract them, please have a look at the ...
Image processing tutorial with TIFF format
If you would like to start processing pictures with TIFF format, we can recommend the software Affinity Photo and have a look at our dedicated tutorial here.
Which USB stick formats are compatible with STELLINA?
Below are the formats compatible with your STELLINA. For Windows users: FAT32 NTFS exFAT ext4 For Mac users: FAT32 exFAT If you have some issues to save your pictures, try reformating your usb stick with the above formats.