Couple of desktop options. Both would leave enough for a monitor and low end laptop for the telescope.
https://www.microcenter.com/product/617002/msi-aegis-rs-006us-gaming-computer
https://www.microcenter.com/product/613824/powerspec-g464-gaming-computer
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https://www.microcenter.com/product/617002/msi-aegis-rs-006us-gaming-computer
https://www.microcenter.com/product/613824/powerspec-g464-gaming-computer
Sent from my iPhone using Tapatalk