Bintel Astronomy Calculator & Simulator 1.3
Developed by Dylan O’Donnell

Choose Telescope

Choose Camera


*This is a randomly generated telescope and camera combination. It may be stupid. Contact Us if you need help picking your perfect telescope!

TELESCOPE: Meade LX200 ACF 14″ SCT Telescope Advanced Coma Free

Focal Length (mm)

F Ratio / F Number

CAMERA: QHY5III-715C 4K Planetary/Guide Camera

Pixel Size (µm)

Pixels Wide

Pixels High


Focal Length (mm)

Field of View / FOV (°)

Binning Magnifier or Reducer
Aperture 355.60mm /14 inches
Maximum Magnification :711.20x
Resolving Limit (Dawes): :0.3262" arcseconds
Resolving Limit (Rayleigh): :0.3881" arcseconds
Visual Magnitude Limit: : mag 15
Native Focal Length / F: 3556mm / F10
5x Rule (Ideal Planetary F-Ratio): F7.3✅
7x Rule (Ideal Planetary F-Ratio): F10.2✅
Ideal Resolution : 0.67" - 2" arcseconds
Resolution 0.0841" arcseconds per pixel
Significant Oversampling ⚠⚠⚠ (3.88x)
This configuration will result in oversampled images which means the image may look soft and blurry. Try a camera with larger pixels, or reducing the focal length with a reducer, removing barlow or smaller telescope.

Note : Oversampling is good for planetary imaging. For planets aim for 2x-4x oversampling

Camera Chip FOV 0.09° x 0.05°

Preview Targets by Relative Scale

*Note that planets apparent size is based on oppositon and will change throughout the year depending on their proximity to Earth.

Click on a telescope, camera or combination in the yellow boxes below to preview how large near and deep space objects will appear and whether the sampling is good for astrophotography. It’s easy! You can also enter in the specifications for any items that aren’t listed here.

The goal for astrophotographers is to choose a combination of telescope & camera that is neither under or oversampled. Note however that a little of either is ok and post processing can improve the end result. For example, Dither & Drizzle improves undersampling. Noise reduction & sharpening improves oversampling.

Need help? Just ask us! 


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