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

Choose Telescope

Choose Camera

TELESCOPE: Unistellar eVscope eQuinox

Focal Length (mm)

F Ratio / F Number


Pixel Size (µm)

Pixels Wide

Pixels High


Focal Length (mm)

Field of View / FOV (°)

Binning Magnifier or Reducer
Aperture 112.50mm /4.43 inches
Maximum Magnification :225.00x
Resolving Limit (Dawes): :1.0311" arcseconds
Resolving Limit (Rayleigh): :1.2267" arcseconds
Visual Magnitude Limit: : mag 13
Native Focal Length / F: 450mm / F4

Product(s) Used in this Calculation...

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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