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#1 City Kid

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Posted 06 March 2013 - 08:22 PM

It looks to me like the most useful one would be the SQM-L with it's narrower field of view. Is there any reason I wouldn't want the SQM-L over the SQM?

#2 GlennLeDrew

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Posted 06 March 2013 - 10:35 PM

I have the original SQM, and very often wish it had a smaller characteristic field than its 80 degrees. Given the variation in sky brightness, even at dark sites, and particularly when the milky way is well up, makes a smaller sampling field very useful.

#3 JimMo

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Posted 07 March 2013 - 07:46 AM

I have the original SQM, and very often wish it had a smaller characteristic field than its 80 degrees. Given the variation in sky brightness, even at dark sites, and particularly when the milky way is well up, makes a smaller sampling field very useful.


+1 My experience exactly.

#4 csa/montana

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Posted 07 March 2013 - 09:23 AM

I also have the original SQM, and am very happy with it. If the SQM-L had been available at the time of my purchase, I would have went with that one, but to me, it's not worth the money to get the newer one, now.

#5 beatlejuice

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Posted 07 March 2013 - 09:30 AM

I have the SQM-L and you can certainly tell from the varying readings as you point to different parts of the sky that it works as intended and, intuitively as you think it should according to the current conditions in different sections of the sky.

Eric

#6 cliff mygatt

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Posted 07 March 2013 - 09:42 AM

I have the SQM as well, bought it used from AMART. It is a nice to have but certainly not a must have. I use it because I have it but would not miss it if I did not have it. Good Luck!

#7 City Kid

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Posted 07 March 2013 - 03:11 PM

Thanks everyone. I pretty much had in my mind I was getting the SQM-L but before I pulled the trigger I wanted to see if anyone knew something I wasn't thinking about. SQM-L it is. I realize this is far from a must have. It's more of a toy for me than anything but it will be nice to have numbers to put with my subjective assessment of the sky quality.

#8 careysub

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Posted 07 March 2013 - 03:59 PM

Thanks everyone. I pretty much had in my mind I was getting the SQM-L but before I pulled the trigger I wanted to see if anyone knew something I wasn't thinking about. SQM-L it is. I realize this is far from a must have. It's more of a toy for me than anything but it will be nice to have numbers to put with my subjective assessment of the sky quality.


It would be very helpful to other amateur astronomers if more people had these AND posted their readings to dark sky sites to characterize them. You could even document the light domes that are present.

#9 JimK

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Posted 07 March 2013 - 06:29 PM

I first got the original SQM, but then saw the narrow-angle model (SQM-L) and thought that it would be better for my uses. I sent an email to the company asking about an upgrade and they were most helpful and said it was possible. So about 2-1/2 years ago I returned my SQM and got it upgraded to an SQM-L for a nominal fee and have not regretted the narrow field since then. I suggest that if anyone is interested in converting, send the company an email for details.

#10 City Kid

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Posted 07 March 2013 - 08:36 PM

I just placed my order. I can't wait to play with my new toy! :jump:

#11 cliff mygatt

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Posted 08 March 2013 - 09:25 AM

Enjoy! There is a forum on Cloudy Night, where I don't remember, for listing your SQM readings.

#12 Doc Willie

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Posted 08 March 2013 - 11:10 AM

It would be very helpful to other amateur astronomers if more people had these AND posted their readings to dark sky sites to characterize them. You could even document the light domes that are present.


You can do that at Globe at Night.

#13 Raginar

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Posted 08 March 2013 - 08:10 PM

You guys tracking on the SQM iphone/android app?

#14 csa/montana

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Posted 08 March 2013 - 09:14 PM

Enjoy! There is a forum on Cloudy Night, where I don't remember, for listing your SQM readings.


It wasn't a forum, rather a thread, that got bumped back many, many pages, as members were not posting their readings enough to keep the thread on page 1. I believe it is in Equip.

#15 John K

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Posted 08 March 2013 - 09:51 PM

I do sketching for a magazine and I find that it is great for giving people an idea of the conditions of which the sketch was done.So for me it is a great tool and less of a toy.

#16 Scott in NC

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Posted 09 March 2013 - 10:27 AM

I've had a SQM-L for a little over a year now, and I really like it. I'm definitely glad that I paid a little extra for the "L" version. And I agree with the previous posters who have said that it's more of a "neat gadget to have" than a "must have." Would it be a serious detriment to my observing enjoyment if I didn't have one--NO! But am I glad that I have one--YES! :)

#17 Raginar

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Posted 09 March 2013 - 10:53 AM

They moved it to Computers and Software. They're looking for volunteers to beta test it. You need a normal SQM and an Iphone 4s-5.

#18 Starman1

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Posted 09 March 2013 - 06:31 PM

One man's "Mag.6.2 sky" is another man's "Mag.6.7 sky".
But one man's "Mag.21.40 sky by SQM" is another man's "Mag.21.40 sky".
Objective reality is a far better indicator to another of the sky conditions at your site than are subjective evaluations.
Here are some threads pertaining:
#1
#2
#3
#4
#5
#6

#19 City Kid

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Posted 09 March 2013 - 07:33 PM

One man's "Mag.6.2 sky" is another man's "Mag.6.7 sky".
But one man's "Mag.21.40 sky by SQM" is another man's "Mag.21.40 sky".
Objective reality is a far better indicator to another of the sky conditions at your site than are subjective evaluations.

That's one reason I wanted one. My subjective evaluation of the skies I observe under on a 1-7 scale means that most good nights are rated the same. However in reality they aren't the same and now I will have actual numbers to refer to.

#20 cliff mygatt

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Posted 09 March 2013 - 07:42 PM

I like that idea! I will start using my SQM readings for transparency log entires and thus make it none subjective!

#21 mountain monk

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Posted 09 March 2013 - 07:50 PM

I miss the old SQM thread, so I will start posting to it again. It is probably more helpful to travelers than the dated LP/color zone maps.

Dark skies.

Jack

#22 csa/montana

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Posted 09 March 2013 - 07:53 PM

Jack; why not start a new SQM Readings Thread?

#23 mountain monk

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Posted 09 March 2013 - 07:57 PM

Well, it looks like it is going to be clear tonight, so---will do!

Dark skies

Jack

#24 Aquarist

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Posted 10 March 2013 - 11:20 AM

Jack; why not start a new SQM Readings Thread?


Heartily endorsed here!

#25 City Kid

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Posted 13 March 2013 - 03:21 PM

I received my new SQM-L today. These things are a lot smaller than I expected. I will post readings on the new Sky Quality Readings thread as soon as I get some.






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