You didn’t mention which tripod you’re using now, or what your budget is for a new tripod. But for stability and less vibration, you may want to consider a carbon fiber tripod. It’s more lightweight than aluminum, but it has vibration-dampening properties that aluminum doesn’t have. Therefore many digiscopers prefer carbon fiber.
Here are some recommendations:
Vanguard Abeo 283CV Carbon Tripod Kit This tripod may be taller that what you’d need for your height, but the legs have a greater circumference, so the tripod is more solid than the Vanguard Abeo 243CV Carbon Tripod Kit.
Swarovski has very nice tripods: Swarovski AT 101 Aluminum Tripod with DH 101 Head . I’d highly recommend the carbon version, but it is $200 more: Swarovski CT 101 Carbon Tripod with DH 101 Head.
Your scope and your digiscoped pics are only as good as your tripod! Be prepared to make an investment—but it will be worth it.
All the best,