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Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | (show all) veebs2 special label Reged: 03/13/07 Loc: DeKalb, IL Re: TriAtlas project (2nd. edition) - first proof [Re: jr_]       #2363962 - 05/01/08 10:23 AM Edit   Reply   Quote Quick Reply   jr - Thanks for the great work. I have been looking for a great star atlas and it looks like my search is done. I was just wondering if you had a way to provide a "Telrad" circle template that could be printed on a sheet of plastic as an overlay? Just a thought...thanks again for the great work!! Post Extras:       Magellan Pooh-Bah Reged: 01/26/06 Loc: Enfield, NS Canada Re: TriAtlas project (2nd. edition) - first proof [Re: veebs2]       #2372977 - 05/05/08 04:03 PM Edit   Reply   Quote Quick Reply   I am very much interested in seeing the Panoramic B Set. When will this one be complete and do you have a sample? Thanks, Post Extras:       Olivier Biot Amused Reged: 04/25/05 Loc: 51°N (Belgium) Re: TriAtlas project (2nd. edition) - first proof [Re: Magellan]       #2373366 - 05/05/08 06:57 PM Edit   Reply   Quote Quick Reply   Hi José, May I suggest to use another projection for the overview pages? I would suggest using the Lambert azimuthal equal-area projection. I have derived a couple equations a couple years ago when I intended to build atlases too. Maybe they can be of help for your endeavor. Cheers! Olivier Post Extras:       jr_ sage Reged: 07/28/03 Loc: Valencia, Spain Re: TriAtlas project (2nd. edition) - first proof [Re: Magellan]       #2374280 - 05/06/08 04:06 AM Edit   Reply   Quote Quick Reply   Here you have a sample of the panoramic set: http://cgi.unk.edu/triatlas/proof/Sample_Panoramic.pdf I have not made printouts yet to check how it looks in paper; this is the reason for the delay in this set (well... last weekend I also wanted to go to observe...). Also, I have to revise carefully the charts to modify the plotting conditions. The appearance is more or less good, I think. Edited by jr_ (05/06/08 04:14 AM) Post Extras:       jr_ sage Reged: 07/28/03 Loc: Valencia, Spain Re: TriAtlas project (2nd. edition) - first proof [Re: Olivier Biot]       #2374311 - 05/06/08 04:39 AM Edit   Reply   Quote Quick Reply   Hi Olivier, This feature (the projection) is one of the features I would like to change. In this second edition, I was still limited by the CNebulaX architecture, which uses a projection system I developed that is valid for the whole sky dome (I implemented only that system owing to the multiplicity of flips, rotations, inverse coordinates, etc, that the program needed). That system is very good for moderate magnifications (<40º) and tends to preserve from distortions extremely wide horizontal areas, which is very good for panoramic screens or landscape printouts. Now the sky atlas software is independent from CNebulaX (finally) and it should evolve to more projection systems. I have copied your routine and I want to implement other projection systems. For the current edition, the projection is rather good. Have a look to the sample chart in the former message, where the charts are 62ºx45º: http://cgi.unk.edu/triatlas/proof/Sample_Panoramic.pdf But to be honest, I only see real reasons to change the projection system for very wide charts (let's say, 60º or more in vertical zoom). Edited by jr_ (05/06/08 04:43 AM) Post Extras:       Olivier Biot Amused Reged: 04/25/05 Loc: 51°N (Belgium) Re: TriAtlas project (2nd. edition) - first proof [Re: jr_]       #2377745 - 05/07/08 02:10 PM Edit   Reply   Quote Quick Reply   I agree José - the main reason why I chose this particular projection was because I liked the way wide angle maps were distorted onto a flat surface, preserving area. The projection can of course also be used to create narrower angle charts, and the distortion is pretty low IIRC. Post Extras:       Magellan Pooh-Bah Reged: 01/26/06 Loc: Enfield, NS Canada Re: TriAtlas project (2nd. edition) - first proof [Re: Olivier Biot]       #2386052 - 05/10/08 08:32 PM Edit   Reply   Quote Quick Reply   This atlas is awesome, its Skyatlas on many many Redbulls :P the panoramic version I cannot wait for, I plan on getting staples to print and laminate it and spiral bind it. Cost is about $3 a page. How close are you to finishing this version? Is there a way I can make a Telrad overlay? How about a shaded milkyway version? you knowm, Deluxe? any plans for this? Not that big of a deal just curious. Is this the right paper to get to do this? HP 11x17 Thanks for making this, Post Extras:       jr_ sage Reged: 07/28/03 Loc: Valencia, Spain Re: TriAtlas project (2nd. edition) - first proof [Re: Magellan]       #2389235 - 05/12/08 09:05 AM Edit   Reply   Quote Quick Reply   Hi, The panoramic set is the next step to do. Last weekend I rebuilt the intermediate B/C set (complementary edition #1), increasing the number of stars up to 11.25 mag and changing the criteria to plot more galaxies (up to 14.5 mag). While I am writting these lines, I am uploading the updated files of the B/C intermediate set, but the process is being quite slowly. This set is my favourite; it is comparable to the Millennium atlas but with a quite reasonable number of charts (218 charts, less than a half of charts than the standard C-set includes, and even less than Uranometria 2000 second edition since the pages are single here). I will prepare the panoramic set in A3 and tabloid page sizes (I am, however, not sure about which would be the most convenient page size for USA/Canada users). I think I will have it this week (around the end). I want to print it first, because the appearance on screen can be misleading. I do not want it to produce a feeling of overcrowding. Telrad overlay? Well, I can do it (but it is necessary?; it is very easy to plot circles with a circle template or a compass on acetate) This first version is in B/W; I can do it another in color, naturally. Post Extras:       Magellan Pooh-Bah Reged: 01/26/06 Loc: Enfield, NS Canada Re: TriAtlas project (2nd. edition) - first proof [Re: jr_]       #2389536 - 05/12/08 11:33 AM Edit   Reply   Quote Quick Reply   I can make my own telrad overlay I think. It shouldn't be an issue. For US and Canada I think the Tabloid you have on the site is fine. Problem in Canada and us is there are two paper sizes Tabloid (11x17) and Ledger (17x11) Alot of printing places have them listed opposite. To be honest the only difference I think is the way it printed onto the page. Personally I prefer the A3 Format of (13x19) The larger I can get it the better it is to read in the field. I was even thinking of resizing it to 150% normal size (20x29) but I think that would be too large and unsure if it can be done without degrade of quality. I have to special order A3 paper and I think I will. Price I see is $46 Canadian and is for use with Epson 720-1440 dpi so if I tell them to print in 1400dpi it should turn out nicely. I myself like the complimentary B/C but I prefer my charts printed in landscape and not portrait which is why I am excited about the Panaromic set. Post Extras:       Magellan Pooh-Bah Reged: 01/26/06 Loc: Enfield, NS Canada Re: TriAtlas project (2nd. edition) - first proof [Re: Magellan]       #2389730 - 05/12/08 01:15 PM Edit   Reply   Quote Quick Reply   umm, yeah, A3 standard format printed and laminated at 600+ DPI will run me $500 according to them for 31 sheets. I called the only two places that could do the work. This is far more than what I expected it would cost Post Extras:       jr_ sage Reged: 07/28/03 Loc: Valencia, Spain Re: TriAtlas project (2nd. edition) - first proof [Re: Magellan]       #2389746 - 05/12/08 01:21 PM Edit   Reply   Quote Quick Reply   Why do you want a so expensive printing? There are very cheap alternatives. I can print it (in the reprography services of my university) for 31 x 0.15 euros = 4.65 euros!!! There easy ways to protect the pages from moisture, but even without, printing a new set of A3 charts (or equivalent) is cheap: at 4.65 euros, I can print them as many times as I need!!! I imagine that a tabloid set (or similar) can equally be printed easily by very few money in your place. My A and B sets were printed by 6.6 euros (paper+printing at laser quality) + 5 euros (folder with plastic pockets) = 11.6 euros. Edited by jr_ (05/12/08 01:36 PM) Post Extras:       exile sage Reged: 01/15/08 Loc: Guangzhou, China Re: TriAtlas project (2nd. edition) - first proof [Re: Magellan]       #2389861 - 05/12/08 02:13 PM Edit   Reply   Quote Quick Reply   It's a great atlas, agreed. But I found that the scale of A3 (manageable at the eyepiece) was still too small to use easily. OTOH, A2 was a great scale, but unwieldy at the eyepiece; strictly a desk version. I'd like to reproduce the Series B charts to use, but the cost at A3 is prohibitive. With a small scope, I'm still better off with Sky Atlas 2000.0... Post Extras:       Olivier Biot Amused Reged: 04/25/05 Loc: 51°N (Belgium) Re: TriAtlas project (2nd. edition) - first proof [Re: exile]       #2390270 - 05/12/08 04:33 PM Edit   Reply   Quote Quick Reply   Hi José, Apparently it is not as straightforward to find A3 papers and laminate them in the USA. I am fortunate as I can print on A3 paper at work. Did you already publish some previews of your panoramic atlas? Post Extras:       jr_ sage Reged: 07/28/03 Loc: Valencia, Spain Re: TriAtlas project (2nd. edition) - first proof [Re: exile]       #2391506 - 05/13/08 03:53 AM Edit   Reply   Quote Quick Reply   Exile, What changes do you think that would help to make it more field-oriented? Please, take as reference the sample chart I linked before(http://cgi.unk.edu/triatlas/proof/Sample_Panoramic.pdf) and indicate what changes do you think are needed (scale, fonts, number of charts, criteria to select objects, etc). I am not preparing the panoramic edition for myself but for other people. My personal field atlas is already built and includes the A and B sets, plus the intermediate B/C that I finally printed last weekend. I don't like large charts in the filed; I prefer more handy charts (A4). Edited by jr_ (05/13/08 04:54 AM) Post Extras:       jr_ sage Reged: 07/28/03 Loc: Valencia, Spain Re: TriAtlas project (2nd. edition) - first proof [Re: Olivier Biot]       #2391521 - 05/13/08 04:14 AM Edit   Reply   Quote Quick Reply   Hi Olivier, As a field atlas, I prefer manipulating smaller charts (A4). I have been using the A4 charts during a year and it is very comfortable. The style is different to conventional atlases in the sense that they are plenty of small scale detail. These details are minute and accurate, it is only a matter of getting used to the style of the charts forgetting the style of conventional atlases. The charts work extremely well once used to them (I can affirm it with full knowledge of its performance). A and B charts can be printed in a larger size, but that was never my intention. For printing the large scale edition (A3 or tabloid), I just need to copy the PDFs in a pendrive and go to the printing services (cheap and fast), but I also have the possibility of using a photocopy machine as printer directly from my PC. However, I would not dare to laminate these large charts. For smaller scale charts (A4), I prefer the system of plastic pockets folder, since it does not give rise to reflections (at least the folders I am using, see here), it does not degradate small scale details, and it is open: I can remove or replace degradated or marked charts placing new ones instead, or introduce small papers (postit) with notes about the objects I want to see, comets, etc. I have prepared only a large-scale sample chart to see and modify. This is the link: http://cgi.unk.edu/triatlas/proof/Sample_Panoramic.pdf. I will upload this afternoon some more charts, if you wish. Please, indicate me the changes that you would do. Edited by jr_ (05/13/08 05:07 AM) Post Extras:       exile sage Reged: 01/15/08 Loc: Guangzhou, China Re: TriAtlas project (2nd. edition) - first proof [Re: jr_]       #2394662 - 05/14/08 12:28 PM Edit   Reply   Quote Quick Reply   I refer specifically to the B series charts, JR. What makes the B series charts so difficult for me to use is the scale. Commendable as it is, there is simply too much detail on these charts to be read easily under red light at A3 scale. Frankly, A4 is next to useless (and my eyesight is not THAT bad). I guess what I am asking for is improvement in chart 'readability', at the expense of an increase in the number of charts. In a nutshell, more charts for this level of detail. It's wonderful that you have devoted so much of your own time to listen to what others have to say, and shown the courtesy to reply to all posts. I'm sure I speak for everyone here when I say we want to help you create a better atlas, and give you all the credit for doing this for us. Thank you. Post Extras:       Magellan Pooh-Bah Reged: 01/26/06 Loc: Enfield, NS Canada Re: TriAtlas project (2nd. edition) - first proof [Re: exile]       #2394700 - 05/14/08 12:40 PM Edit   Reply   Quote Quick Reply   Exile, thats my issue, I love the size of A3 but can't stand the readability of it, I love the larger scale of the A2 but not easy to hold at the eyepiece, if you use a heavier stock, say 25-30lb paper, you might be able to hold it easier without it collapsing. I too only have a small 4" refractor, seeing to 12th mag is not important but sure is nice trying to identify faint fuzzies. From my dark site I have seen as far ar 13-14th mag believe it or not, using averted vision of course and very very good seeing. Post Extras:       exile sage Reged: 01/15/08 Loc: Guangzhou, China Re: TriAtlas project (2nd. edition) - first proof [Re: Magellan]       #2394759 - 05/14/08 01:00 PM Edit   Reply   Quote Quick Reply   Thanks, Jeff, for chiming in on this one... I didn't think I was the only one who had encountered this problem. Post Extras:       Scott Regener Pooh-Bah Reged: 03/31/06 Loc: SE Minnesota Re: TriAtlas project (2nd. edition) - first proof [Re: exile]       #2396756 - 05/15/08 06:56 AM Edit   Reply   Quote Quick Reply   Quote: I refer specifically to the B series charts, JR. What makes the B series charts so difficult for me to use is the scale. Commendable as it is, there is simply too much detail on these charts to be read easily under red light at A3 scale. Frankly, A4 is next to useless (and my eyesight is not THAT bad). I guess what I am asking for is improvement in chart 'readability', at the expense of an increase in the number of charts. In a nutshell, more charts for this level of detail. I thought my printer malfunctioned while printing Monocerous. It's practically black paper on the B charts. I compared the chart scale to Taki's 8.5 atlas and they are basically the same scale - but Taki cuts off at 8.5, while the B charts are in the 12th magnitude range. Taki's feels wide and open, with plenty of space between stars, while the TriAtlas feels cramped and tight. I haven't yet really worked hard under a telescope with the TriAtlas, but I think the compromise isn't a bad one. And if I'm not mistaken, the TriAtlas is created using free software, so there's nothing to stop anyone from making their own custom atlas. Correct me if I'm wrong... I think it's called CNebulaX. Post Extras:       o1d_dude o1der than dirt Reged: 10/03/07 Loc: The Wolfpack Re: TriAtlas project (2nd. edition) - first proof [Re: Scott Regener]       #2399049 - 05/16/08 02:21 AM Edit   Reply   Quote Quick Reply   Scott, jr_ is the author of CNebulaX. Post Extras:       Pages: 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | (show all)

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