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Calcimator

Mount Payload Calculator

Check if your telescope and accessories are within your mount's payload capacity for visual or imaging use.

Inputs

Results

Total Payload

25 lbs

≈ 6 bags of sugar

Adequate (0=No, 1=Yes)

1

Capacity Used63%
Imaging Headroom1 lbs
How to Use This Calculator
  1. Enter Scope Weight (lbs), Accessory Weight (lbs), and Mount Capacity (lbs).
  2. Set Imaging Mode.
  3. Review Total Payload (lbs) and Adequate (0=No, 1=Yes).
  4. Use Capacity Used (%) and Imaging Headroom (lbs) to inform your decision.
  5. Use the chart to visualize the results and explore different scenarios by adjusting inputs.

How the result changes with Scope Weight (lbs)

Scope Weight (lbs)Total PayloadAdequate (0=No, 1=Yes)
1116 lbs1
3641 lbs0
6570 lbs0
9095 lbs0

What each input means

Scope Weight (lbs)
Weight of the telescope optical tube assembly in pounds
Accessory Weight (lbs)
Weight of camera, guide scope, finder, eyepieces, dew heater, etc.
Mount Capacity (lbs)
Manufacturer-rated payload capacity of your mount in pounds
Imaging Mode
0 = Visual (can use full rated capacity), 1 = Imaging (should stay under 60-65% for tracking)

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Scope Weight (lbs) = 20, Accessory Weight (lbs) = 5, Mount Capacity (lbs) = 40, Imaging Mode = 0 = 4 input(s) provided
  2. Calculate Total Payload
    Total Payload
    25 = 25
  3. Calculate Adequate
    Adequate
    1 = 1
  4. Calculate Capacity Used
    Capacity Used
    63 = 63

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