I Magnitude where the Pale Dot is blue?

[snorkack]

Earth is called Pale Blue Dot.
The famous picture of Pale Blue Dot with Voyager 1 from 40 AU is taken with a camera which is not assured to have the correct magnitude or colour sensitivity of naked eye.
As for BV colour indices of planets and one satellite, Wikipedia links to a Nasa report:
https://ntrs.nasa.gov/api/citations/19710009758/downloads/19710009758.pdf
It has more entries, but the major ones:

1. Sun +0.63
2. Mercury +0.97
3. Venus +0.82
4. Earth +0.2
5. Moon +0.92
6. Mars +1.33
7. Jupiter +0.83
8. Io +1.17
9. Europa to Callisto all about +0.85
10. Saturn +1.04
11. Titan +1.3
12. Uranus +0.56
13. Neptune +0.41

Now compare the brightest stars...

1. Sirius A0 magnitude -1.46, index 0.00
2. Canopus A9 magnitude -0.74 index +0.15
3. Rigil Kentaurus G2+K1 magnitude -0.27 but colour index quoted separately for components - A magnitude +0.01 colour index +0.71, B magnitude +1.33, colour index +0.88. I get colour index for AB approximately +0.75
4. Arcturus K0 magnitude -0.05 colour index +1.23
5. Vega A0 magnitude and colour index 0 by def
6. Capella K0 magnitude +0.08 colour index +0.80
7. Rigel B8 magnitude +0.13 colour index -0.03
8. Procyon F5 magnitude +0.34 colour index +0.42
9. (omitting from now on various A and B stars because they´re all bluer than Earth)
10. Betelgeuse M1 magnitude +0.50 colour index +1.85
11. Aldebaran K5 magnitude +0.86 colour index +1.44
12. Mirfak F5 magnitude +1.82 colour index +0.38
13. Sargas F0 magnitude +1.84 colour index +0.21

Judging by colour index, Sargas should look like Earth.
At its magnitude, does Sargas look like "pale blue dot"? Does Canopus?

 

[hutchphd]

I believe the Blue/Visible (BV) index is used as an index of color temperature and is not a particularly good indicator of expected visual response. The response of the eyeball to color is likely to change with intensity. I have never personally played with it.

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