Hi Norm -- nice to hear from you again.
Yes, I've seen in a couple of places where people keep Indian Stars in a viv, but I think the overall view is that they should be kept in an open-topped table. Here is the advice sheet from the Royal Veterinary College
https://www.rvc.ac.uk/Media/Default/Bea ... 022-jh.pdf
and they recommend an open-topped enclosure.
I don't have personal experience of keeping Indian Stars, but I know they have a high requirement for calcium and Vitamin D3 (through a good UVB light), and they shouldn't be kept with other tortoises, because they are sensitive to pathogens that might be harmless to another species but can be toxic to Stars. Do you still have your Western Hermann's and how is he doing?
Regarding keeping the temperature and humidity right, I think it will be very similar to your Hermann's. If you have a good heat/light bulb that can be raised and lowered (I think this is essential for keeping any tortoise), you can just raise or lower it to increase or decrease the temperature as needed. I always recommend a digital thermometer with a display unit and a separate probe at the end of a wire than can be lowered into the circle of light under the lamp and is at about the height of the tortoise. It's very useful to have one with a Max/Min facility so that you can see how hot or how cold it got since you last looked. You can get them in lots of places, but this is the one I use:
https://www.pharmacy-equipment.co.uk/pr ... er-tmm105/
Regarding temperatures, I think the range at the warm end of the table should be between about 28C - 35C, and that won't be difficult to achieve. I think the background/cooler end of the table should be about 20C - 24C and unless your table is very long, that shouldn't be difficult either (although obviously the ambient temperature of your room will have an effect. I have a 7' long table for my Horsfields, and it is easy to achieve 30C or more at the hot end. If the room itself is cold, I sometimes turn on another lamp that is further down the table just to make sure that it is at least 20C at the cool end. For an Indian Star that needs good UVB I would use a heat/light bulb and then a fluorescent UVB tube that is long enough to cover most of the table, and in that way you get better exposure to UVB than from one mercury vapour bulb hanging at one end.
Regarding humidity, many people just spray the substrate and occasionally the tortoise 2 - 3 times a week, and others have a humid hide for them (if you need instructions on how to build a humid hide I can find them for you), but they don't need to be kept excessively humid, and I think that spraying a couple of times a week should be fine.
Actually I've just found a very good care sheet for Indian Stars that I wasn't aware of. It's published by the Norfolk Tortoise Club, which is a very respectable group, so I think I would trust the advice there.
https://static1.squarespace.com/static/ ... ESHEET.pdf
Do let us know how you get on, and send us a photo when he arrives!
Nina