Turn Raw Data into Cosmic Art – Featuring the Enigmatic Sh2-73!
Are you ready for a new challenge under the stars? Welcome to the Hellas-Sky Summer 2025 Astrophotography Contest! This time, we’ve prepared something special: a deep, high-quality dataset of the mysterious and rarely imaged nebula Sh2-73.
Captured using two DeltaRho 350 f/3 telescopes and an LRGB filter set, these data showcase the full power of our world-class location and equipment – and now they’re yours to explore!
🔭 Your Mission:
Download the data, process it using your skills – and create a stunning image of this faint, ethereal object.
✅ Available in XISF and FITS formats
✅ Free to download
✅ Submission deadline: July 31, 2025
🏆 What You Can Win:
1st Prize: A 4-month subscription (August–November 2025) to our DeltaRho 350 telescopes – that’s 2 premium datasets per month, delivered to you free of charge!
2nd Prize: 3 datasets of your choice from the DeltaRho350 collection
3rd Prize: 1 dataset of your choice from these telescopes
🎉 Winners will be announced on August 10, 2025, and featured on our website!
📥 How to Participate:
1. Register for free on our website.
2. Download the Sh2-73 dataset (XISF or FITS).
3. Create an image using only our data (no additional external data allowed).
4. Submit your final JPEG (max. 5MB, your name in the filename) by July 31, 2025 via the button below.
5. Include the software/tools you used for processing.
🧪 Judging Criteria:
Depth and contrast
Fine details
Overall visual impact and creativity
📣 Share Your Vision with the Community!
All image rights remain with the participants. By entering, you agree that Hellas-Sky may feature your image on our website and social media – with full credit to you as the creator.
👉 Download the data now and let the stars inspire you!
Whether you’re a beginner or a seasoned pro, this is your chance to shine
Object:Sharpless2-73
Telescopes: 2xDeltaRho350 (1.48 arcsec/pix – OSC)
Mount: 10Micron GM3000
Camera: QHY600-M/Binning 2×2 at -10° Celsius
Image type: LRGB
Total exposure time: 445x 3min = 1.335 min
Single frame exposure time: 3 min Best FWHM: 2.72″ arcsec
Calibration: Bias, Dark, Flat
Don’t forget to login/register on our website for the access to the data set and the possibility to upload your image.