Hello, I calculated the theoretical magnitude with the following formula 2.1+5.0xlog(telescope diameter) and I have the following results:
51mm (2'') = 12.12 absolute theoretical magnitude. And I check on different sites and they give me 10.5 absolute theoretical magnitude.
Also I took the formula which was announced in 1947. Which is as follows:M = m – 2 + 2.5 x log (D x T x G)
M: limiting magnitude of the instrument
m: visual limit magnitude (around 6 depending on the quality of the sky)
D: instrument diameter in mm
T: telescope transmission (typically 0.6 to 0.8)
G: magnification used.
And that gives me, with a magnification of 10X, M=19.85!
These are the formulas used to calculate possible observable magnitudes.
Help me understand please!
Hello, I calculated the theoretical magnitude with the following formula 2.1+5.0xlog(telescope diameter) and I have the following results:
51mm (2'') = 12.12 absolute theoretical magnitude. And I check on different sites and they give me 10.5 absolute theoretical magnitude.
Also I took the formula which was announced in 1947. Which is as follows:M = m – 2 + 2.5 x log (D x T x G)
M: limiting magnitude of the instrument
m: visual limit magnitude (around 6 depending on the quality of the sky)
D: instrument diameter in mm
T: telescope transmission (typically 0.6 to 0.8)
G: magnification used.
And that gives me, with a magnification of 10X, M=19.85!
These are the formulas used to calculate possible observable magnitudes.
Help me understand please!
On Wednesday, November 1, 2023 at 8:16:06 AM UTC-4, Jean Mario Charest wrote:=====================================================================================
Hello, I calculated the theoretical magnitude with the following formula 2.1+5.0xlog(telescope diameter) and I have the following results:
51mm (2'') = 12.12 absolute theoretical magnitude. And I check on different sites and they give me 10.5 absolute theoretical magnitude.
Also I took the formula which was announced in 1947. Which is as follows:M = m – 2 + 2.5 x log (D x T x G)
M: limiting magnitude of the instrument
m: visual limit magnitude (around 6 depending on the quality of the sky) D: instrument diameter in mm
T: telescope transmission (typically 0.6 to 0.8)
G: magnification used.
And that gives me, with a magnification of 10X, M=19.85!
These are the formulas used to calculate possible observable magnitudes.
Help me understand please!Try this one: https://www.cruxis.com/scope/limitingmagnitude.htm
Sysop: | Keyop |
---|---|
Location: | Huddersfield, West Yorkshire, UK |
Users: | 297 |
Nodes: | 16 (1 / 15) |
Uptime: | 03:57:36 |
Calls: | 6,670 |
Calls today: | 2 |
Files: | 12,219 |
Messages: | 5,338,743 |