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Yes - my temp indication is a surface device I stick on the tip of the cold finger. The temperature control sensor is inserted into a hole that is mounted between the peltier and the flat back of the DSI (I cut the fins off the DSI and sanded it flat). I've used heat transfer paste between the peltier and the aluminium block and between the block and the back of the DSI.
The aluminium block is 65x45x15 mm. The temperature sensor (thermistor) is in a hole 25mm along the long side of the block and the hole extends about half way through the short side so 20mm deep. I covered the bare legs of the thermister with heat shrink then enclosed the entire thing in heat shrink. I put some heat transfer compound in the hole before inserting the thermistor.
The peltier is cooling the aluminium block and this in turn is cooling the back of the DSI so quite a bit of aluminium in total.
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