Recently, many customers have come to ask, what kind of astronomical eyepiece can be used with SV406P Spotting Scope, can Barlow be added, and what is the maximum magnification?
Hope the following test results could help you.
Fig.1 The test result of SV406P
Fig.2 Test results of SV406P with an astronomical eyepiece
We can draw a conclusion that replacing the 1.25-inch astronomical eyepiece of the SV406P eyepiece could present a clear image. We found that 25mm eyepiece plus 2x Barlow can not present a clear image. But when we remove the extension tube of the Barlow, optical eyepieces with 2x Barlow could show a clear image.
Test object: air-conditioner about 50 meters away.
Test date: November 12, 2020
Fig.3 Eyepiece connection with Barlow (Remove the extension tube of the Barlow）
In conclusion, this test proved that the SV406P spotting scope could be used with 1.25-inch astronomical telescope eyepieces.
Hope my test results can help you when choosing eyepieces.
If you have any questions, please contact us: support@svbony. com
Finally, thank you for your patience in reading.