You can make panos as long as you have a series of shots with overlap ( usually i make about 20% overlap ) . Softwares such as photomerge function in PS can merge for ya and correct the distortions reasonably well. *But be sure you remove any pol filters, and your white balance and stuffs constant, basically all else constant for all pieces.
The stitch might get a little less than perfect with moving items in your pan such as people walking, clouds, water. ( i had my fair share of misalignments because of that. but also with some luck at times )
* with a faster shutter speed freezing the water motion, i am bound to get problems
The puritans will tell ya best results if you can anchor on a tripod and with a pan head, locate the entrance pupil fo your lens. While finding the entrance pupil of your own lens is a homework u can do before the trip, the setup was so tedious that i dropped the idea after attempting it in Europe.
Alternatively you can get a shift lens to stitch
You can check with Hazmee.
He has some really impressive pan shots that i would love to learn too
constant ISO, shutter speed, aperture, try not to use auto WB, overlap around 30%, shoot verticals and mount on a tripod. best to have an L-bracket
personally, ive had some really bad experiences with photomerge in photoshop CS2, and if ur shots arent perfect, its not easy to merge
i use a $100 software, and i find it wonderful. compensates for all the flaws in brightness falloff, barrel distortion and sharpening too