7 Moons of Saturn

[johnnyt123 (John)]

Hi every one.

I took this mosaic composed of 3 videos stacked in registax 6 and then
processed in Photo Impact X3.
Imaging was done with Celestron CPC 925 XLT GPS and a DMK51 monochrome camera

It is an image showing Saturn and 9 satellites.
I verified the moons using Sky safari.
If any one feels the moons are labelled incorrectly please let me know.

Thanks and hope you enjoy

Johnny

[Matt Wastell (Matt)]

Hey Johnny - where is the pic?

[johnnyt123 (John)]

sorry had trouble with the upload

but here is it

[Solar (Ralph Smith)]

Looks like you have a handle on that camera Johnny.

[johnnyt123 (John)]

I can say with absolute conviction that my main problem with all my imaging is tracking and maybe a little with focusing, but mainly tracking.

all images no matter how short the exposure just aren't as crisp and sharp when the subject is slowly drifting about....

[Dennis]

Hello, John

A great image and excellent presentation, but I think that it may not be completely accurate?

I’ve just opened Starry Night Pro Plus 6 and Iapetus is measured at approx. 6 arcmin from Saturn with Titan and Hyperion at approx. 1 arcmin each, which doesn’t fit with your image, so I don’t think that #1 is Hyperion.
For #6, marked as Polydeuces, Helene would be a more suitable candidate as Polydeuces, (Saturn XXXIV) is estimated to be only 2–3 km in diameter and I could not find an on-line estimate of its Apparent Magnitude. I strongly suspect that even Helene at mag 18.69 is beyond the limits of the DMK51 and a better candidate for #6 might be the mag 12.59 star USNO J1430434-120044.

I Goggled Fenrir and its quoted Apparent Magnitude is 25, which is extremely faint and so the object marked #7 is not Fenrir. Just FYI, a few Ice in Space members have managed to image down to around mag 22 with larger ‘scopes, longer exposures and more exotic, cooled ccd cameras.

Anyhow, that’s just the result of a few minutes research, but great effort though, I must have a go at this myself on the next clear night in Brisbane, if we ever get another one this year…

Cheers

Dennis

[GeoffW1 (Geoff)]

Hi,

Amazing photo, no matter which moon is which.

Cheers

[johnnyt123 (John)]

Dennis I have to agree with you.

Fenrir is one of the faintest moon in the solar system.
What I have as Fenrir #7 is most likely star HD 127187

I also feel that Hyperion is not what I indicated as 1. But there was a set of data that had Hyperion as a faint blur of where you indicated it to be. I will have to reprocess and Post an updated version.

For #6 the only 2 candidates i can see in sky safari pro are Polydeuces and a star TYC 5571-0547-1.

Thanks for your input Dennis.

Johnny

Originally Posted by Dennis

Hello, John

A great image and excellent presentation, but I think that it may not be completely accurate?

I’ve just opened Starry Night Pro Plus 6 and Iapetus is measured at approx. 6 arcmin from Saturn with Titan and Hyperion at approx. 1 arcmin each, which doesn’t fit with your image, so I don’t think that #1 is Hyperion.
For #6, marked as Polydeuces, Helene would be a more suitable candidate as Polydeuces, (Saturn XXXIV) is estimated to be only 2–3 km in diameter and I could not find an on-line estimate of its Apparent Magnitude. I strongly suspect that even Helene at mag 18.69 is beyond the limits of the DMK51 and a better candidate for #6 might be the mag 12.59 star USNO J1430434-120044.

I Goggled Fenrir and its quoted Apparent Magnitude is 25, which is extremely faint and so the object marked #7 is not Fenrir. Just FYI, a few Ice in Space members have managed to image down to around mag 22 with larger ‘scopes, longer exposures and more exotic, cooled ccd cameras.

Anyhow, that’s just the result of a few minutes research, but great effort though, I must have a go at this myself on the next clear night in Brisbane, if we ever get another one this year…

Cheers

Dennis

[pw (Peter)]

Good job

[johnnyt123 (John)]

well i have gone through the raw data again and here are the updates final results .

I have included one of the raw frames before clearing up the noise.
Hyperion is now identified as well as 3 other stars

any comments welcome.

thanks for looking

Johnny

[04Stefan07 (Stefan)]

Nice images mate.

[Dennis]

Nice work John, these detective-like hunts for the fainter and less imaged objects are quite rewarding and very interesting.

Cheers

Dennis

[johnnyt123 (John)]

Very true Dennis.
It makes astrophotograogy that little more exciting.

The next thing I hope to image is Pluto when it's back in season.