I bought this bag for a Celestron Schimdt Cassegrain 6".
At first I wan't sure if the price was worth, it is very expensive!
Still I had to move the telescope from Washington to San Diego and then to Mexico City.
In the first flight I wasn't allowed to take any onboard lugagge with me, nothing! I tried explaining that it is a very delicate instrument and even with the fragile treatment could get broken, still I wasn't allowed and had to check it, I was very worried, but this case protected it so well that it made sense paying the extra money. After first flight I checked and everything was in order and collimated. On the next flight I was able to take it onboard, just to make it clear, the case wont fit in most on board compartments closed, you have to open it and place it that way, its the only way it'll fit. Again everything arrived unmoved and collimated, I would recommend buying it if you look to move around with your scope a lot, any type of transportation. For the price the case is well constructed with a semi hard shell and very thick protection on the inside, it fits the 6" optical room with plenty of space. It has so much extra space that it seems to me it would be better if it was specifically desgined to travel on board on air compartments, anyway if you take it to a flight just open it an it still protects the scope, you have to make sure that nothing is placed on top.
I'm taking it for a ride again, this time to baja, seeing that it takes really good care of scope.

I have a Celestron NexStar 6 SE. I was against buying this case for a long time. I was so against spending so much money on a case that I almost brought my scope cross country in the box that it was shipped to me in. Now that I have the case though, I am so glad I bought it. After spending so much on a good scope, I figure it's worth it to suck it up and protect it! The case itself is very cool looking. The hard outer shell is good and strong and the case is easy to carry. We bought our scope for the purpose of bringing it cross country in our car, and camping. The case has a compartment inside, that has additional pockets inside of it- great for bringing some of our extra lenses that don't fit in our lens case, our lens cleaning tool, extra batteries, the lens holder for the tripod, our sky sync GPS, etc. - safely zipped up inside of one big pocket so that they don't fall out and damage the scope. As for protecting the tube of the scope- it fits VERY snug. Which is good, except I don't like how the visual back and star pointer seem to be pressing into the case. So, to add some extra protection for these items, I put my telescope into the case by laying the longer pad (that the case came with) horizontally across the top of the telescope tube. I also cut the other pad that the case came with down, and put it back into the fabric case- and I stand that up vertically. I feel like this adds extra protection so that the knob isn't just sort of "floating". The picture below shows how I pack my scope into the case. The case also has a strap that goes around the tube, and all of this combined keeps it good and safe for when were driving on very rocky dirt roads and walking long distances with it.
So, though it is expensive, it is worth it. Very well worth it. It allows us to easily travel with our scope, and protects it far better than we ever could ourselves. Highly recommend!
Update: 3 years later and we couldn't imagine not having a case for our telescope. It has really come in handy. We got a wagon so that we can go out to clearings in the woods. Setup is so easy, I put bright green tape on the pouches & labeled them with black marker so that everything is easy to find in the dark. Plus packing the telescope for travel is nothing with a good case to keep it in. We often stop at hotels where we have to lug our expensive stuff inside too so this is really helpful. So glad we bought it!

This is a great case. Much better than using the box my Nexstar 6se was shipped in. For a while I tried using a rubbermaid bin and reusing the foam packaging, but it was not that convenient to carry around. You couldn't carry it one handed.

One side holds your scope. For the 6se you wont need the two foam spacer inserts. To get the 6se to fit, you need to stretch the case foam a bit to clear the visual back and focuser. At first I was concerned about the pressure of such a snug fit, but the foam does give a bit so it is fine. Be aware that the 4/5/6se will fit with the mount attached, but for the 8se you will need to remove the mount. Only the 8se optical tube will fit. The picture on the insert of the case (check out the pictures on the celestron site to see what I mean) shows the OTA placed with the hand control on the right and the bolt that attaches the tube to the fork arm pointing up, however I had to insert it reversed (mirrored) for that to work. In other words, when I place the OTA in the case I have the hand control on the left so the fork arm knob points up. If I placed it as the pamphlet showed, the knob would be pointing down and I think that would prevent it from laying truly flat. I had to remove the finderscope, not to mention the diagonal. The 4/5se might allow room to have them attached, but I wouldn't bet on it. It also has a nice seat belt buckle to secure it.

The other side has a slightly rigid zippered flap the size of the entire side. It is recessed so as to have enough clearance when the case is closed. Unzipping the flap and lifting it up reveals it has a full length pocket on the other side. You could possibly fit notes and small starcharts within it. I place my eyepiece tray in it even though part of it sticks out. No worries since when the flap is zipped everything inside is separated from the OTA.
Underneath where the flap lays, there are two velcro closed pouches. Inside one pouch there are three separated spaces. The other pouch has four. In one pouch, I could easily fit the finderscope, the diagonal, and AC power cord. The other pouch will accommodate eyepieces, filters and other odds and ends.The pouches themselves feel slightly padded as well.

The handles include a velcro wrap to make sure the straps stay together. The outer shell is a bit rigid, but I would not go about dropping or banging it around. Don't expect to step on it and not crunch something inside. It is a vessel to store your OTA and accessories elegantly and convenient to carry around one handed. While the case itself looks like it would withstand normal wear and tear, I wouldn't want to cause any damage to it that would affect the contents inside.

Do yourself a favor and get this case. While it is hard to justify the cost of this as opposed to a DIY solution. This is designed for your scope and it is worth it in my opinion.

I purchased this for my Celestron Nexstar Evolution 8. First, as many wonder, it fits the OTA and mount, but just barely. It will cause the sides to bow out a 1/2 inch or so but I have no problems zipping it up. Storage in the top compartment is deep and has two large soft nylon pockets (Velcro flaps seal the pockets) with sewn in soft nylon dividers - 9 total of several different widths - very nice and well thought out. (9" deep in the top pocket and 7" deep on the bottom. All compartment openings are 3" front to back and from side to side there are 4 - 1.5", 1 - 2.75", 1 - 3.5", 3 - 4" approx). It holds my Laptop nicely with room to spare too. Also very nice. On the backside of the flap that covers this compartment is a large pocket for paper items approximately 11" wide by 11" deep - also good for a ultra book laptop computer . A Velcro strip holds in the contents. I do want to go into the quality as this is expensive. First as another reviewer noted; there is nothing here of any exceptional quality- average i'd say -certainly not up to the asking price. I would describe the quality as like an inexpensive luggage carrier found at any discount store. Something of the order of $75.00. Given the custom touches, I'd say this is worth $150.00 and that should give Celestron a reasonable profit margin. The lining is thin and loose and I don't think it will last long unless extreme care is taken not to snag anything on it. In fact, 30 minutes after this arrived at my door the lining is now damaged. I was arranging one of the pads used to protect the scope and the Velcro used to seal up the lining on this pad accidentally touched the lining. I pulled it loose and frayed the lining. It is made of some soft material about the thickness of a inexpensive T-shirt . The outside is ridged except for the top closure. The outside is covered in nylon and seems like it will hold up to most anything. There is a side and top soft nylon handle that is sewn and riveted. I would not trust either one of the handles to bear the weight of this case with my OTA AND mount inside. If you were just keeping the OTA inside they should be more than strong enough. The extendable ridged handle is average quality but again should hold up with care. The zippers are not YKK and are not branded; they are nylon, light duty zippers. Finally, It is extremely nice looking. So would I recommend this case?, well, I decided on this case for these reasons: One it is designed for a telescope and mount and carries LOTS of accessories - safely (although I won't put my EPs in this case)- this is the major reason I purchased this. It matches my Celestron telescope - vanity, I know. There is only one other case I could find that is made for this scope and it's around $500 dollars - crazy, but that one is suitable for shipping your scope, this one is not. My only real disappointment with this case is the lining and possibly the zipper - the wear items. Break the zipper and this becomes near worthless. I can't say if the zipper is going to hold up as I just got my hands on it. Back to my recommendation.... yes I would recommended it but only because there is really nothing else out there near this price and with these features, but in my opinion, you are not getting your money's worth. Hopefully this review will give you the detail you need to made an informed decision. I would give this 3.5 stars out of 5 if it were possible. To Celestron: use a larger zipper and upgrade the lining and I think I would gladly recommend this for the current asking price.

***UPDATE***
I just just completed a 3 week - 4,000 mile road trip around the western states. I took my telescope and it traveled in my 5th wheel trailer the whole time. I took the scope out about 6 times and moved the case around the trailer every couple of days. The scope suffered no damage and the collimation remained spot on even driving over miles of rough dirt roads. I'm very pleased. The case suffered no damage either. To kept any stresses off the scope during travel by releasing the clutches on the alt/alz mount and I placed the scope on it's side rather than in the upright position. I'm changing my rating to 4 stars, although again, I think this is over-priced.

I've only used it once, but I feel better transporting my telescope in this. Will use it again next spring