Roger On In User Guide

[Lucretia]

VirtualROGER (Resourcing Open Geospatial Education and Research) has been established using experiences gained from a NSF MRI project for enabling geospatial research and education at the CyberGIS Center. It provides hybrid computing modalities including HPC batch, data-intensive computing, and cloud computing, backed by a common data store. It is administered by the School of Earth, Society, and Environment (SESE) and is integrated with the Keeling compute cluster operated by the school.

Prior experience with Linux environment will be extremely helpful, however, this guide was written with the intention that some users may not be as familiar with certain terms or ideas. For these areas, we have provided links to additional resources, tutorials, etc.

If you are looking for additional information about Ignite TV set-top boxes and Internet gateways, you can also check the Shaw support site (search for BlueCurve). The Comcast Xfinity support site is also a useful resource but it can be confusing because it contains information about older X1 gear (that Rogers never deployed) as well as a lot of information about products and services that are specific to Comcast.

How do we escalate this within Rogers. I am a current Shaw with Rogers customer.

I currently have Shaw Arris TV Gateway with 2 TB external drive & 3 terminals for past several years it is excellent but hard drive issues and may have to update to Ignite TV.

I went to the Rogers website to review Ignite TV user manual and found a few random Ignite TV FAQs and a 1 minute video of nothing relevant. I almost gave up and then went back to Shaw website, did a search and found complete online User Manual. Shaw has always been very good at online manuals as well as PDFs.

I am very concerned that as the Shaw Rogers merger proceeds further than Shaw's website info may disappear.

SO HOW DO we escalate that this info is required? Is ther a way to provide Feedback to Rogers executive like there is for us to provide feedback to Shaw Executive. Shaw's feedback link is still on website but does not seem to get same level of response that it did before the Rogers buyout.

I found some of it with a search on the link you provided. If you go to the Shaw website ( -articles/equipment-info-shaw-tv-equipment-user-guides/ta-p/5560?respon...) , you will see more that could be added to make the transition more user friendly. Just suggestions. The Shaw online guides have helped me a lot over the years.

@57 I hear your perspective. Though I may disagree with the percentages, I do agree with your premise.

I use multiple ways to resolve issues/research all the time.

One of which is user manuals in 2 cases at least

1. if all else fails; and

2. if something new of interest.

A merger provides the opportunity for Rogers to benefit from the work of Shaw's people as well as just taking over their customer base.

My comments here are for those employees/executive at Rogers that may perhaps be interested in customer input on some of the benefits of the buyout

such as the Shaw documentation that Rogers currently provides to some of us as their current "Shaw with Rogers" customer base.

Another problem with publishing a comprehensive "user guide" is that you need to pay somebody to write it and keep it up-to-date... and whatever you publish will be too much information for some and never enough information for others.

Comcast puts their documentation online. Customers/technology licensees, such as Rogers and Shaw, use that as boilerplate for documentation that they, in turn, provide to their customers. (In my opinion, Shaw did a better job of this for BlueCurve than Rogers did for Ignite TV.) The challenge with this approach is that Comcast now offers a broader, more diverse suite of products under their Xfinity brand than Rogers or Shaw did, and as their products become more tightly-integrated, it becomes more cumbersome for Rogers to customize. You can't just use their docs as a template and simply apply/substitute Rogers branding.

Comcast tried to design the UI of their TV product to be familiar (if you know how to drive a Ford car, you should also be able to drive a Chevy) and to make other unique features discoverable. e.g. When navigating the Guide, if you press the "right arrow" button repeatedly, a tip will pop up telling you that you can navigate to the next day by pressing the Fast Forward button.

Rogers also used to have a "Tips & Tricks" button accessible from the set-top boxes Help screen. "Tips & Tricks" is still available on the Apps screen (waaay down in the Daily Life apps section). You can also access YouTube tutorials from the Help screen as well.

Even taking the Voice Remote as an example, Comcast offers remotes (e.g. and XR16 and the new XR100 for their streaming service boxes) that Rogers and Shaw do not. Comcast and Shaw also offer the "web remote" to their customers but Rogers does not... at least not net. Hopefully, once Rogers and Shaw customers are integrated onto common systems in the back-end, and the Rogers and (former) Shaw Ignite TV services share a common feature set, the online support pages will become unified and improved as well.

The Newtonian telescope design is both simple and remarkable. It is capable of producing a perfect image on axis, but off axis, the image quality degrades mainly due to an optical aberration called coma. Modern fast Newtonians and Donsonians of F/5 and below have a surprisingly small diffraction limited spot (just 2mm across in an F/4.5), where the image is not disturbed by coma. The Astro-Tech (also sold under the Altair Astro and GSO brand labels) coma corrector has been designed to cancel out this aberration to give a flat, wide field with high resolution from edge to edge. It is manufactured by Guan Sheng Optical (GSO) and was developed by Astro-Tech from a high quality, modern optical design by Roger Ceragioli

My corrector came in a nice box and consists of two parts, the coma corrector itself and a 2" eyepiece adaptor which screw together with a 48mm (2" filter) thread. The eyepiece adaptor has two screws and a brass compression ring and is marked ALTAIR ASTRO 2", Coma Corrector, Made in Taiwan. At least I knew I had the right part, but no other documentation was supplied and I had to search the web for information on how to use it.

Unfortunately the corrector is not ready for visual use as supplied, because of inadequate eyepiece spacing. The proper spacing is not critical and a compromise spacing to cover your eyepieces can made up with 2" extender tubes, such Hyperion fine tuning rings or empty 2" filters. You do not need a turntable like that of the Tele Vue Paracorr. With the spacers installed, the assembly which is now about 70mm long just slides into the focuser tube like a barlow. In this arrangement the focal point is moved in by a small distance of about 10mm (see photographs below). The corrector acts as a very slight barlow, enlarging the image by just about 10%. The lenses are nicely coated and reflect pale green. The aluminium housing is cleanly finished in satin black and the combined unit weighs about 350 grams.

Once set up properly in a collimated telescope, the corrector works just as you would expect to give a clean, flat image. The view feels quite different, much more like a refractor, with pin point stars from edge to edge, but no chromatic aberration. Objects can be allowed to drift across the view of wide angle eyepieces with little or no visible loss of sharpness. The removal of coma can be clearly demonstrated by doing a star test on and off axis without the corrector installed and then with it. Any loss of contrast due to the extra corrector glass (two doublet lenses) in the light path is undetectable, I think. The coma corrector is now a permanent fixture in my focuser except on occasion when viewing planets with my 200mm Newtonian which now has a motor drive. It seems to me that a coma corrector should be a standard accessory for all fast Newtonian telescopes and particularly for larger Dobsonians with no tracking. This model is an effective, affordable example and I strongly recommend it.

The first issue is actually finding one in stock. Supply has been patchy over the years and at the time of writing, it is listed by Astronomics (Astro-Tech brand at $135, including T-mount, but out of stock), Agena (GSO brand at $130, including T-mount, but out of stock), Ian King (Altair Astro brand at 88) and Telescope Service (GSO brand without visual adaptor at 61 Euro). There is then the issue of setting it up properly and most of the remainder of this review is devoted to showing how this can be done, but first there is a little information about Newtonian telescopes and coma.

Newtonian telescopes are all designed with a single figured mirror in the shape of a parabola rotated on its axis, a paraboloid. All mirrors of a given focal length are the same shape. If you have a fast mirror, it is easy to to create a slow one of the same focal length, just by blanking off the outer part of the mirror. It is the outer part of the mirror that generates coma, which is zero on axis but which increases linearly the further from the axis you get. At the focal surface, the amount of coma is independent of the mirror focal length so a single corrector will work for any Newtonian. In practice, a perfect corrector is not attainable so the designer will aim to produce the best result he can for a specific F/ ratio, F/4.5 for this model I understand. However, the corrector will give good results for mirrors that are somewhat faster than this and for all slower mirrors.

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