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Pocket Sky Atlas Jumbo

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15 replies to this topic

#1 StarTrooper

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Posted 18 September 2021 - 06:42 AM

Before I purchase this Atlas are the pages coated for protection of dew?



#2 Knasal

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Posted 18 September 2021 - 06:54 AM

I know it is thicker paper and has held up well for me under the dew, but I’m not sure the pages are “coated.”

 

Hope that helps-

Kevin


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#3 desertstars

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Posted 18 September 2021 - 08:06 AM

To me it feels like the charts are printed on something very much like card stock, certainly a grade of paper heavier than used in most astronomy reference. But they don't have anything like a dew-proof coating on them. 


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#4 wrvond

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Posted 18 September 2021 - 10:37 AM

Compared to my Interstellarum the pages are much thicker with a glossier finish (not too glossy). The binding, more than anything, of my Jumbo Edition leads me to believe this atlas is not dew proof, but rather dew resistant.

However, now that you got me wondering, I have fired off an email to Sky & Telescope asking if the pages of the two editions are in fact dew proof. I also asked how the pages are constructed, so perhaps we'll get to the bottom of this soon.


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#5 George N

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Posted 18 September 2021 - 10:59 AM

I own one of the very early copies of the original size PSA. It has spent many a night soaking wet with dew ( or frosted up - I live in NY ). Today it is a tad wrinkled and dog-eared -- but is quite usable for it's intended purpose.

 

My plan -- buy a new copy every 10 years.  cool.gif


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#6 LKSM12

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Posted 18 September 2021 - 12:34 PM

Something I read somewhere. Go to the dollar store get a couple of cans of cheap Hairspray. Then lay out the atlas two pages at a time spray them from the appropriate distance very likely you'll see the coating attached to the pages let it dry.
It takes some time but it does work. I actually took a drop of water, dropped it on the page let it sit wiped it off and there was no wrinkle or puckering or anything, it's a cheap way to make the pages waterproof yourself and you can do any kind of a book that way.
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#7 wrvond

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Posted 24 September 2021 - 05:06 PM

I got a reply!

 

"They are not dew proof. They are hardy, however I wouldn’t want to test them against moisture too much."

 

There you have it, folks. waytogo.gif


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#8 Castor

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Posted 24 September 2021 - 09:12 PM

Thank you wrvond! waytogo.gif


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#9 Starman47

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Posted 25 September 2021 - 07:24 AM

One of my ideas. When out observing, place a plastic sheet on the PSA while at the eyepiece. 


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#10 Tony Flanders

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Posted 26 September 2021 - 04:19 AM

I prefer the Pocket Sky Atlas's card stock to atlases that are printed on plastic or have plastic-laminated pages. Dew soaks into the card stock and disappears, whereas it forms a thin (or not so thin!) film on any plastic surface. Those films of water cause the pages of star charts and/or atlases to stick together, sometimes in disastrous ways.

 

Both kinds of atlas need to be dried out carefully after being brought inside.


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#11 desertstars

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Posted 26 September 2021 - 09:11 AM

I prefer the Pocket Sky Atlas's card stock to atlases that are printed on plastic or have plastic-laminated pages. Dew soaks into the card stock and disappears, whereas it forms a thin (or not so thin!) film on any plastic surface. Those films of water cause the pages of star charts and/or atlases to stick together, sometimes in disastrous ways.

 

Both kinds of atlas need to be dried out carefully after being brought inside.

Nothing remotely dew-proof was available to me when I made my first observations as a teenager. I can't recall how I came to use this method, but I kept anything paper (notebooks and hand-copied star charts - I didn't dare take the few books I owned out there) on a crate under an old card table. On the worst nights, even this didn't stop the dew from soaking into pages, and I'd hang things like laundry in the house the next day. But the trick - blocking radiative cooling - greatly reduced dew-fall.


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#12 Illinois

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Posted 27 September 2021 - 06:02 AM

I have two regular size Sky and Telescope  Pocket Sky Atlas. One for outside and other for in house.  I wish they add few Abell galaxies and few more deep sky objects.  


Edited by Illinois, 27 September 2021 - 06:03 AM.

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#13 George N

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Posted 02 October 2021 - 09:48 AM

I prefer the Pocket Sky Atlas's card stock to atlases that are printed on plastic or have plastic-laminated pages. Dew soaks into the card stock and disappears, whereas it forms a thin (or not so thin!) film on any plastic surface. Those films of water cause the pages of star charts and/or atlases to stick together, sometimes in disastrous ways.

 

Both kinds of atlas need to be dried out carefully after being brought inside.

....and then there's the nights that start out dewy - and then go below freezing - and my Sky Atlas 2000 laminated turns into an ice cream cake!

 

My very early PSA is a little wrinkled - but functions as intended. The SA 2000 laminated has had to have some pages cleaned of the acid-dew residue left behind after drying - but has also survived. Alas, another SA 2000 desk addition I had did not survive a minor flood.


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#14 faackanders2

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Posted 03 October 2021 - 06:55 PM

Often I keep chats openen in the rear of my SUV with rear window opened/popped up horizontal


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#15 Etrsi_645

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Posted 09 October 2021 - 10:45 AM

i don't think they do this any more, but here is the link...

 

https://www.astrosys...z/starchrt.htm 



#16 Lee D

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Posted 23 October 2021 - 08:14 PM

I'm re-waterproofing an old tent fly, and have spray water repellant on hand (Scotchgard "Outdoor Water Shield"). After reading this discussion, I think I'll take one of my old Pocket Sky Atlases and test spray the cover and two facing pages. Once dry, I can compare how it does v its sibling of the same age, under both dry and simulated heavy dew. 


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